Add support for virgin disklabels
Submitted by: dillon
This commit is contained in:
Jordan K. Hubbard
parent
e7c2b5a51d
commit
ff7d516252
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=68044
@ -48,7 +48,7 @@
|
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.Nm disklabel
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.Fl w
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.Op Fl r
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.Ar disk Ar disktype
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.Ar disk Ar disktype/auto
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.Oo Ar packid Oc
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.Nm disklabel
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.Fl e
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@ -69,7 +69,7 @@
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.Fl s Ar boot2
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.Oc
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||||
.Ar disk
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||||
.Oo Ar disktype Oc
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.Oo Ar disktype/auto Oc
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.Nm disklabel
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.Fl w
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.Fl B
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@ -77,7 +77,7 @@
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.Fl b Ar boot1
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.Fl s Ar boot2
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.Oc
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.Ar disk Ar disktype
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||||
.Ar disk Ar disktype/auto
|
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.Oo Ar packid Oc
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.Nm disklabel
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.Fl R
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@ -87,7 +87,7 @@
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.Fl s Ar boot2
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.Oc
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.Ar disk Ar protofile
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.Oo Ar disktype Oc
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.Oo Ar disktype/auto Oc
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.Sh DESCRIPTION
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.Nm Disklabel
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installs, examines or modifes the label on a disk drive or pack. When writing
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@ -116,15 +116,23 @@ is described under each command.
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All
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.Nm disklabel
|
||||
forms require a disk device name, which should always be the raw
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.if t ``complete'' (or ``c'')
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.if n "complete" (or "c")
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partition, for example
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.Pa /dev/da0c .
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device name representing the disk or slice. For example
|
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.Pa da0
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represents the entire disk irregardless of any DOS partitioning,
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and
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.Pa da0s1
|
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represents a slice. Some devices, most notably
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.Ar ccd ,
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require that the
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.if t ``whole-disk'' (or ``c'')
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.if n "whole-disk" (or "c")
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partition be specified. For example
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.Pa ccd0c .
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You do not have to include the
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.Pa /dev/
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path prefix when specifying the device.
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.Nm
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understands the abbreviation
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.Pa da0 ,
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which it converts internally to
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.Pa /dev/da0c .
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will automatically prepend it.
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.Ss Reading the disk label
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.Pp
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To examine or save the label on a disk drive, use
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@ -151,7 +159,9 @@ If the
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.Fl r
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flag is given,
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.Nm
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reads the label from the raw disk and displays it.
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reads the label from the raw disk and displays it. Both versions are usually
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identical except in the case where a label has not yet been initialized or
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is corrupt.
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.Ss Writing a standard label
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.Pp
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To write a standard label, use the form
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@ -159,9 +169,15 @@ To write a standard label, use the form
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.Nm disklabel
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.Fl w
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.Op Fl r
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.Ar disk Ar disktype
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.Ar disk Ar disktype/auto
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||||
.Oo Ar packid Oc
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.Pp
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.Nm disklabel
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.Fl w
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||||
.Op Fl r
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||||
.Ar disk
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auto
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.Pp
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The required arguments to
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.Nm
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are the drive to be labeled and the drive type as described in the
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@ -202,6 +218,20 @@ disk is the only supported operation, and the
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.Ar disk
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itself must be provided as the canonical name, i.e. not as a full
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path name.
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.Pp
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PC-based systems have special requirements in order for the BIOS to properly
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recognize a FreeBSD disklabel. Older systems may require what is known as
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a ``dangerously dedicated''
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disklabel, which creates a fake DOS partition to work around problems older
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BIOSes have with modern disk geometries. On newer systems you generally want
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to create a normal DOS slice using
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.Ar fdisk
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and then create a FreeBSD disklabel within that slice. This is described
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later on in this page.
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.Pp
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Installing a new disklabel does not in of itself allow your system to boot
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a kernel using that label. You must also install boot blocks, which is
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described later on in this manual page.
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.Ss Editing an existing disk label
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.Pp
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To edit an existing disk label, use the form
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@ -262,7 +292,16 @@ command
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.Pp
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The final three forms of
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.Nm
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are used to install bootstrap code:
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are used to install bootstrap code. If you are creating a
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``dangerously-dedicated'' partition for compatibility with older PC systems,
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you generally want to specify the raw disk name such as
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.Pa da0.
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If you are creating a label within an existing DOS slice, you should specify
|
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the slice name such as
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.Pa da0s1 .
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Making a partition bootable can be tricky. If you are using a normal DOS
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slice you typically install (or leave) a standard MBR on the base disk and
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then install the FreeBSD bootblocks in the slice.
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.Pp
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.Nm disklabel
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.Fl B
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@ -274,6 +313,11 @@ are used to install bootstrap code:
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.Oo Ar disktype Oc
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.Pp
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This form installs the bootstrap only. It does not change the disk label.
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You should never use this command on a base disk unless you intend to create
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a ``dangerously-dedicated'' disk, such as
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.Ar da0 .
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This command is typically run on a slice such as
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.Ar da0s1 .
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.Pp
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.Nm disklabel
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.Fl w
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@ -288,6 +332,8 @@ This form installs the bootstrap only. It does not change the disk label.
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.if t This form corresponds to the ``write label'' command described above.
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.if n This form corresponds to the "write label" command described above.
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In addition to writing a new volume label, it also installs the bootstrap.
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If run on a base disk this command will create a ``dangerously-dedicated''
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label. This command is normally run on a slice rather then a base disk.
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.Pp
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.Nm disklabel
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.Fl R
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@ -302,6 +348,8 @@ In addition to writing a new volume label, it also installs the bootstrap.
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.if t This form corresponds to the ``restore label'' command described above.
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.if n This form corresponds to the "restore label" command described above.
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In addition to restoring the volume label, it also installs the bootstrap.
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If run on a base disk this command will create a ``dangerously-dedicated''
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label. This command is normally run on a slice rather then a base disk.
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.Pp
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The bootstrap commands always access the disk directly, so it is not necessary
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to specify the
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@ -343,6 +391,49 @@ and
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for the standard stage1 and stage2 boot images (details may vary
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on architectures like the Alpha, where only a single-stage boot is used).
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.El
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.Ss Initializing/Formatting a bootable disk from scratch
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.Pp
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To initialize a disk from scratch the following sequence is recommended.
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Please note that this will wipe everything that was previously on the disk,
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including any non-FreeBSD slices.
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.Bl -enum
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.It
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Use
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.Ar fdisk
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to initialize the DOS partition table, creating a real whole-disk slice to
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hold the FreeBSD disklabel, and installing a master boot record.
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.It
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Use
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.Ar disklabel
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to initialize a virgin FreeBSD disklabel and install FreeBSD boot blocks .
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.It
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Use
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.Ar disklabel
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to edit your newly created label, addiing appropriate partitions.
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.It
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Finally newfs the filesystem partitions you created in the label. A typical
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disklabel partiioning scheme would be to have an ``a'' partition
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of approximately 128MB to hold the root filesystem, a ``b'' partition for
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swap, a ``d'' partition for /var (usually 128MB), an ``e'' partition
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for /var/tmp (usually 128MB), an ``f'' partition for /usr (usually around 2G),
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and finally a ``g'' partition for /home (usally all remaining space).
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Your mileage may vary.
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.El
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.Pp
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.Nm fdisk -BI da0
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.Pp
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.Nm disklabel
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.Fl w
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.Fl r
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.Fl B
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.Ar da0s1
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auto
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.Pp
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.Pp
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.Nm disklabel
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.Fl e
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.Ar da0s1
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.Pp
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.Sh FILES
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.Bl -tag -width Pa -compact
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.It Pa /etc/disktab
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@ -445,63 +536,67 @@ cylinder boundary.
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.Dl disklabel da0
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.Pp
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Display the in-core label for
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.Pa da0
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.Pa da0s1
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as obtained via
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.Pa /dev/da0c .
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.Pa /dev/da0s1 .
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When reading a label, FreeBSD will allow you to specify the base disk name
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even if the label resides on a slice. However, to be proper you should
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specify the base disk name only if you are using a ``dangerously-dedicated''
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label. Normally you specify the slice.
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.Pp
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.Dl disklabel da0 > savedlabel
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.Dl disklabel da0s1 > savedlabel
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.Pp
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Save the in-core label for
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.Pa da0
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.Pa da0s1
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into the file
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.Pa savedlabel .
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This file can be used with the
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.Fl R
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flag to restore the label at a later date.
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.Pp
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.Dl disklabel -w -r /dev/da0c da2212 foo
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.Dl disklabel -w -r /dev/da0s1 da2212 foo
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.Pp
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Create a label for
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.Pa da0
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.Pa da0s1
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based on information for
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.if t ``da2212'' found in
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.if n "da2212" found in
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.Pa /etc/disktab .
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Any existing bootstrap code will be clobbered.
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.Pp
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.Dl disklabel -e -r da0
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.Dl disklabel -e -r da0s1
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.Pp
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Read the on-disk label for
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.Pa da0 ,
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.Pa da0s1 ,
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edit it and reinstall in-core as well as on-disk. Existing bootstrap code is
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unaffected.
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.Pp
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.Dl disklabel -r -w da0 auto
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.Dl disklabel -r -w da0s1 auto
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.Pp
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Try to auto-detect the required information from
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.Pa da0 ,
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.Pa da0s1 ,
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and write a new label to the disk. Use another disklabel -e command to edit the
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partitioning and file system information.
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.Pp
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.Dl disklabel -R da0 savedlabel
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.Dl disklabel -R da0s1 savedlabel
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.Pp
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Restore the on-disk and in-core label for
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.Pa da0
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.Pa da0s1
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from information in
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.Pa savedlabel .
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Existing bootstrap code is unaffected.
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.Pp
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.Dl disklabel -B da0
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.Dl disklabel -B da0s1
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.Pp
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Install a new bootstrap on
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.Pa da0 .
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.Pa da0s1 .
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The boot code comes from
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.Pa /boot/boot1
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and possibly
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.Pa /boot/boot2 .
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On-disk and in-core labels are unchanged.
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.Pp
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.Dl disklabel -w -B /dev/da0c -b newboot1 -s newboot da2212
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.Dl disklabel -w -B /dev/da0s1 -b newboot1 -s newboot da2212
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.Pp
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Install a new label and bootstrap.
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.if t The label is derived from disktab information for ``da2212'' and
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@ -511,6 +606,19 @@ The bootstrap code comes from the files
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.Pa /boot/newboot1
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and
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.Pa /boot/newboot2 .
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.Pp
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.Dl dd if=/dev/zero of=/dev/da0 bs=512 count=32
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.Dl fdisk -BI da0
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.Dl dd if=/dev/zero of=/dev/da0s1 bs=512 count=32
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.Dl disklabel -w -r -B da0s1 auto
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.Dl disklabel -e da0s1
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.Pp
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Completely wipe any prior information on the disk, creating a new bootable
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disk with a DOS partition table containing one ``whole-disk'' slice. Then
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initialize the slice, then edit it to your needs. The
|
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.Pa dd
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commands are optional, but may be necessary for some BIOSes to properly
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recognize the disk.
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.Sh SEE ALSO
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.Xr disklabel 5 ,
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.Xr disktab 5 ,
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@ -1346,10 +1346,17 @@ getvirginlabel(void)
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warn("cannot open %s", namebuf);
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return (NULL);
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}
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if (ioctl(f, DIOCGDINFO, &lab) < 0) {
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warn("ioctl DIOCGDINFO");
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close(f);
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return (NULL);
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/*
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* Try to use the new get-virgin-label ioctl. If it fails,
|
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* fallback to the old get-disdk-info ioctl.
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*/
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if (ioctl(f, DIOCGDVIRGIN, &lab) < 0) {
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if (ioctl(f, DIOCGDINFO, &lab) < 0) {
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warn("ioctl DIOCGDINFO");
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close(f);
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return (NULL);
|
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}
|
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}
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close(f);
|
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lab.d_boot0 = NULL;
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@ -48,7 +48,7 @@
|
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.Nm disklabel
|
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.Fl w
|
||||
.Op Fl r
|
||||
.Ar disk Ar disktype
|
||||
.Ar disk Ar disktype/auto
|
||||
.Oo Ar packid Oc
|
||||
.Nm disklabel
|
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.Fl e
|
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@ -69,7 +69,7 @@
|
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.Fl s Ar boot2
|
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.Oc
|
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.Ar disk
|
||||
.Oo Ar disktype Oc
|
||||
.Oo Ar disktype/auto Oc
|
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.Nm disklabel
|
||||
.Fl w
|
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.Fl B
|
||||
@ -77,7 +77,7 @@
|
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.Fl b Ar boot1
|
||||
.Fl s Ar boot2
|
||||
.Oc
|
||||
.Ar disk Ar disktype
|
||||
.Ar disk Ar disktype/auto
|
||||
.Oo Ar packid Oc
|
||||
.Nm disklabel
|
||||
.Fl R
|
||||
@ -87,7 +87,7 @@
|
||||
.Fl s Ar boot2
|
||||
.Oc
|
||||
.Ar disk Ar protofile
|
||||
.Oo Ar disktype Oc
|
||||
.Oo Ar disktype/auto Oc
|
||||
.Sh DESCRIPTION
|
||||
.Nm Disklabel
|
||||
installs, examines or modifes the label on a disk drive or pack. When writing
|
||||
@ -116,15 +116,23 @@ is described under each command.
|
||||
All
|
||||
.Nm disklabel
|
||||
forms require a disk device name, which should always be the raw
|
||||
.if t ``complete'' (or ``c'')
|
||||
.if n "complete" (or "c")
|
||||
partition, for example
|
||||
.Pa /dev/da0c .
|
||||
device name representing the disk or slice. For example
|
||||
.Pa da0
|
||||
represents the entire disk irregardless of any DOS partitioning,
|
||||
and
|
||||
.Pa da0s1
|
||||
represents a slice. Some devices, most notably
|
||||
.Ar ccd ,
|
||||
require that the
|
||||
.if t ``whole-disk'' (or ``c'')
|
||||
.if n "whole-disk" (or "c")
|
||||
partition be specified. For example
|
||||
.Pa ccd0c .
|
||||
You do not have to include the
|
||||
.Pa /dev/
|
||||
path prefix when specifying the device.
|
||||
.Nm
|
||||
understands the abbreviation
|
||||
.Pa da0 ,
|
||||
which it converts internally to
|
||||
.Pa /dev/da0c .
|
||||
will automatically prepend it.
|
||||
.Ss Reading the disk label
|
||||
.Pp
|
||||
To examine or save the label on a disk drive, use
|
||||
@ -151,7 +159,9 @@ If the
|
||||
.Fl r
|
||||
flag is given,
|
||||
.Nm
|
||||
reads the label from the raw disk and displays it.
|
||||
reads the label from the raw disk and displays it. Both versions are usually
|
||||
identical except in the case where a label has not yet been initialized or
|
||||
is corrupt.
|
||||
.Ss Writing a standard label
|
||||
.Pp
|
||||
To write a standard label, use the form
|
||||
@ -159,9 +169,15 @@ To write a standard label, use the form
|
||||
.Nm disklabel
|
||||
.Fl w
|
||||
.Op Fl r
|
||||
.Ar disk Ar disktype
|
||||
.Ar disk Ar disktype/auto
|
||||
.Oo Ar packid Oc
|
||||
.Pp
|
||||
.Nm disklabel
|
||||
.Fl w
|
||||
.Op Fl r
|
||||
.Ar disk
|
||||
auto
|
||||
.Pp
|
||||
The required arguments to
|
||||
.Nm
|
||||
are the drive to be labeled and the drive type as described in the
|
||||
@ -202,6 +218,20 @@ disk is the only supported operation, and the
|
||||
.Ar disk
|
||||
itself must be provided as the canonical name, i.e. not as a full
|
||||
path name.
|
||||
.Pp
|
||||
PC-based systems have special requirements in order for the BIOS to properly
|
||||
recognize a FreeBSD disklabel. Older systems may require what is known as
|
||||
a ``dangerously dedicated''
|
||||
disklabel, which creates a fake DOS partition to work around problems older
|
||||
BIOSes have with modern disk geometries. On newer systems you generally want
|
||||
to create a normal DOS slice using
|
||||
.Ar fdisk
|
||||
and then create a FreeBSD disklabel within that slice. This is described
|
||||
later on in this page.
|
||||
.Pp
|
||||
Installing a new disklabel does not in of itself allow your system to boot
|
||||
a kernel using that label. You must also install boot blocks, which is
|
||||
described later on in this manual page.
|
||||
.Ss Editing an existing disk label
|
||||
.Pp
|
||||
To edit an existing disk label, use the form
|
||||
@ -262,7 +292,16 @@ command
|
||||
.Pp
|
||||
The final three forms of
|
||||
.Nm
|
||||
are used to install bootstrap code:
|
||||
are used to install bootstrap code. If you are creating a
|
||||
``dangerously-dedicated'' partition for compatibility with older PC systems,
|
||||
you generally want to specify the raw disk name such as
|
||||
.Pa da0.
|
||||
If you are creating a label within an existing DOS slice, you should specify
|
||||
the slice name such as
|
||||
.Pa da0s1 .
|
||||
Making a partition bootable can be tricky. If you are using a normal DOS
|
||||
slice you typically install (or leave) a standard MBR on the base disk and
|
||||
then install the FreeBSD bootblocks in the slice.
|
||||
.Pp
|
||||
.Nm disklabel
|
||||
.Fl B
|
||||
@ -274,6 +313,11 @@ are used to install bootstrap code:
|
||||
.Oo Ar disktype Oc
|
||||
.Pp
|
||||
This form installs the bootstrap only. It does not change the disk label.
|
||||
You should never use this command on a base disk unless you intend to create
|
||||
a ``dangerously-dedicated'' disk, such as
|
||||
.Ar da0 .
|
||||
This command is typically run on a slice such as
|
||||
.Ar da0s1 .
|
||||
.Pp
|
||||
.Nm disklabel
|
||||
.Fl w
|
||||
@ -288,6 +332,8 @@ This form installs the bootstrap only. It does not change the disk label.
|
||||
.if t This form corresponds to the ``write label'' command described above.
|
||||
.if n This form corresponds to the "write label" command described above.
|
||||
In addition to writing a new volume label, it also installs the bootstrap.
|
||||
If run on a base disk this command will create a ``dangerously-dedicated''
|
||||
label. This command is normally run on a slice rather then a base disk.
|
||||
.Pp
|
||||
.Nm disklabel
|
||||
.Fl R
|
||||
@ -302,6 +348,8 @@ In addition to writing a new volume label, it also installs the bootstrap.
|
||||
.if t This form corresponds to the ``restore label'' command described above.
|
||||
.if n This form corresponds to the "restore label" command described above.
|
||||
In addition to restoring the volume label, it also installs the bootstrap.
|
||||
If run on a base disk this command will create a ``dangerously-dedicated''
|
||||
label. This command is normally run on a slice rather then a base disk.
|
||||
.Pp
|
||||
The bootstrap commands always access the disk directly, so it is not necessary
|
||||
to specify the
|
||||
@ -343,6 +391,49 @@ and
|
||||
for the standard stage1 and stage2 boot images (details may vary
|
||||
on architectures like the Alpha, where only a single-stage boot is used).
|
||||
.El
|
||||
.Ss Initializing/Formatting a bootable disk from scratch
|
||||
.Pp
|
||||
To initialize a disk from scratch the following sequence is recommended.
|
||||
Please note that this will wipe everything that was previously on the disk,
|
||||
including any non-FreeBSD slices.
|
||||
.Bl -enum
|
||||
.It
|
||||
Use
|
||||
.Ar fdisk
|
||||
to initialize the DOS partition table, creating a real whole-disk slice to
|
||||
hold the FreeBSD disklabel, and installing a master boot record.
|
||||
.It
|
||||
Use
|
||||
.Ar disklabel
|
||||
to initialize a virgin FreeBSD disklabel and install FreeBSD boot blocks .
|
||||
.It
|
||||
Use
|
||||
.Ar disklabel
|
||||
to edit your newly created label, addiing appropriate partitions.
|
||||
.It
|
||||
Finally newfs the filesystem partitions you created in the label. A typical
|
||||
disklabel partiioning scheme would be to have an ``a'' partition
|
||||
of approximately 128MB to hold the root filesystem, a ``b'' partition for
|
||||
swap, a ``d'' partition for /var (usually 128MB), an ``e'' partition
|
||||
for /var/tmp (usually 128MB), an ``f'' partition for /usr (usually around 2G),
|
||||
and finally a ``g'' partition for /home (usally all remaining space).
|
||||
Your mileage may vary.
|
||||
.El
|
||||
.Pp
|
||||
.Nm fdisk -BI da0
|
||||
.Pp
|
||||
.Nm disklabel
|
||||
.Fl w
|
||||
.Fl r
|
||||
.Fl B
|
||||
.Ar da0s1
|
||||
auto
|
||||
.Pp
|
||||
.Pp
|
||||
.Nm disklabel
|
||||
.Fl e
|
||||
.Ar da0s1
|
||||
.Pp
|
||||
.Sh FILES
|
||||
.Bl -tag -width Pa -compact
|
||||
.It Pa /etc/disktab
|
||||
@ -445,63 +536,67 @@ cylinder boundary.
|
||||
.Dl disklabel da0
|
||||
.Pp
|
||||
Display the in-core label for
|
||||
.Pa da0
|
||||
.Pa da0s1
|
||||
as obtained via
|
||||
.Pa /dev/da0c .
|
||||
.Pa /dev/da0s1 .
|
||||
When reading a label, FreeBSD will allow you to specify the base disk name
|
||||
even if the label resides on a slice. However, to be proper you should
|
||||
specify the base disk name only if you are using a ``dangerously-dedicated''
|
||||
label. Normally you specify the slice.
|
||||
.Pp
|
||||
.Dl disklabel da0 > savedlabel
|
||||
.Dl disklabel da0s1 > savedlabel
|
||||
.Pp
|
||||
Save the in-core label for
|
||||
.Pa da0
|
||||
.Pa da0s1
|
||||
into the file
|
||||
.Pa savedlabel .
|
||||
This file can be used with the
|
||||
.Fl R
|
||||
flag to restore the label at a later date.
|
||||
.Pp
|
||||
.Dl disklabel -w -r /dev/da0c da2212 foo
|
||||
.Dl disklabel -w -r /dev/da0s1 da2212 foo
|
||||
.Pp
|
||||
Create a label for
|
||||
.Pa da0
|
||||
.Pa da0s1
|
||||
based on information for
|
||||
.if t ``da2212'' found in
|
||||
.if n "da2212" found in
|
||||
.Pa /etc/disktab .
|
||||
Any existing bootstrap code will be clobbered.
|
||||
.Pp
|
||||
.Dl disklabel -e -r da0
|
||||
.Dl disklabel -e -r da0s1
|
||||
.Pp
|
||||
Read the on-disk label for
|
||||
.Pa da0 ,
|
||||
.Pa da0s1 ,
|
||||
edit it and reinstall in-core as well as on-disk. Existing bootstrap code is
|
||||
unaffected.
|
||||
.Pp
|
||||
.Dl disklabel -r -w da0 auto
|
||||
.Dl disklabel -r -w da0s1 auto
|
||||
.Pp
|
||||
Try to auto-detect the required information from
|
||||
.Pa da0 ,
|
||||
.Pa da0s1 ,
|
||||
and write a new label to the disk. Use another disklabel -e command to edit the
|
||||
partitioning and file system information.
|
||||
.Pp
|
||||
.Dl disklabel -R da0 savedlabel
|
||||
.Dl disklabel -R da0s1 savedlabel
|
||||
.Pp
|
||||
Restore the on-disk and in-core label for
|
||||
.Pa da0
|
||||
.Pa da0s1
|
||||
from information in
|
||||
.Pa savedlabel .
|
||||
Existing bootstrap code is unaffected.
|
||||
.Pp
|
||||
.Dl disklabel -B da0
|
||||
.Dl disklabel -B da0s1
|
||||
.Pp
|
||||
Install a new bootstrap on
|
||||
.Pa da0 .
|
||||
.Pa da0s1 .
|
||||
The boot code comes from
|
||||
.Pa /boot/boot1
|
||||
and possibly
|
||||
.Pa /boot/boot2 .
|
||||
On-disk and in-core labels are unchanged.
|
||||
.Pp
|
||||
.Dl disklabel -w -B /dev/da0c -b newboot1 -s newboot da2212
|
||||
.Dl disklabel -w -B /dev/da0s1 -b newboot1 -s newboot da2212
|
||||
.Pp
|
||||
Install a new label and bootstrap.
|
||||
.if t The label is derived from disktab information for ``da2212'' and
|
||||
@ -511,6 +606,19 @@ The bootstrap code comes from the files
|
||||
.Pa /boot/newboot1
|
||||
and
|
||||
.Pa /boot/newboot2 .
|
||||
.Pp
|
||||
.Dl dd if=/dev/zero of=/dev/da0 bs=512 count=32
|
||||
.Dl fdisk -BI da0
|
||||
.Dl dd if=/dev/zero of=/dev/da0s1 bs=512 count=32
|
||||
.Dl disklabel -w -r -B da0s1 auto
|
||||
.Dl disklabel -e da0s1
|
||||
.Pp
|
||||
Completely wipe any prior information on the disk, creating a new bootable
|
||||
disk with a DOS partition table containing one ``whole-disk'' slice. Then
|
||||
initialize the slice, then edit it to your needs. The
|
||||
.Pa dd
|
||||
commands are optional, but may be necessary for some BIOSes to properly
|
||||
recognize the disk.
|
||||
.Sh SEE ALSO
|
||||
.Xr disklabel 5 ,
|
||||
.Xr disktab 5 ,
|
||||
|
||||
@ -1346,10 +1346,17 @@ getvirginlabel(void)
|
||||
warn("cannot open %s", namebuf);
|
||||
return (NULL);
|
||||
}
|
||||
if (ioctl(f, DIOCGDINFO, &lab) < 0) {
|
||||
warn("ioctl DIOCGDINFO");
|
||||
close(f);
|
||||
return (NULL);
|
||||
|
||||
/*
|
||||
* Try to use the new get-virgin-label ioctl. If it fails,
|
||||
* fallback to the old get-disdk-info ioctl.
|
||||
*/
|
||||
if (ioctl(f, DIOCGDVIRGIN, &lab) < 0) {
|
||||
if (ioctl(f, DIOCGDINFO, &lab) < 0) {
|
||||
warn("ioctl DIOCGDINFO");
|
||||
close(f);
|
||||
return (NULL);
|
||||
}
|
||||
}
|
||||
close(f);
|
||||
lab.d_boot0 = NULL;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user