Document vfs.root.mountfrom.
Reviewed by: imp, wblock Differential Revision: https://reviews.freebsd.org/D5332
This commit is contained in:
parent
43b227c89f
commit
88a8e56bbc
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=297690
@ -112,6 +112,31 @@ The name must be a subdirectory of
|
||||
that contains a kernel.
|
||||
.It Ar kernel_options
|
||||
Flags to be passed to the kernel.
|
||||
.It Ar vfs.root.mountfrom
|
||||
Specify the root partition to mount.
|
||||
For example:
|
||||
.Pp
|
||||
.Dl vfs.root.mountfrom="ufs:/dev/da0s1a"
|
||||
.Pp
|
||||
.Xr loader 8
|
||||
automatically calculates the value of this tunable from
|
||||
.Pa /etc/fstab
|
||||
from the partition the kernel was loaded from.
|
||||
The calculated value might be calculated incorrectly when
|
||||
.Pa /etc/fstab
|
||||
is not available during
|
||||
.Xr loader 8
|
||||
startup (as during diskless booting from NFS), or if a different
|
||||
device is desired by the user.
|
||||
The preferred value can be set in
|
||||
.Pa /loader.conf .
|
||||
.Pp
|
||||
The value can also be overridden from the
|
||||
.Xr loader 8
|
||||
command line.
|
||||
This is useful for system recovery when
|
||||
.Pa /etc/fstab
|
||||
is damaged, lost, or read from the wrong partition.
|
||||
.It Ar password
|
||||
Protect boot menu with a password without interrupting
|
||||
.Ic autoboot
|
||||
|
Loading…
Reference in New Issue
Block a user