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Totally revamp the man page, update to the state of affairs.

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Make a link from boot_${ARCH}.8 to boot.8, so people will get what
they expect when asking "man boot".

I think David will lynch me when i'm requesting this to go into 2.1... :-)
This commit is contained in:
Joerg Wunsch 1995-10-07 12:05:00 +00:00
parent 2362d22e48
commit d16b647e7f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=11307
2 changed files with 111 additions and 61 deletions
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7
sbin/reboot/Makefile
View File

@ -5,6 +5,13 @@ DPADD= ${LIBUTIL}
LDADD= -lutil
MAN8= reboot.8 boot_hp300.8 boot_i386.8 boot_sparc.8 boot_tahoe.8 boot_vax.8
MLINKS= reboot.8 halt.8 reboot.8 fastboot.8 reboot.8 fasthalt.8
ARCH!= uname -m
.if exists (${.CURDIR}/boot_${ARCH}.8)
MLINKS+= boot_${ARCH}.8 boot.8
.endif
LINKS= ${BINDIR}/reboot ${BINDIR}/halt ${BINDIR}/reboot ${BINDIR}/fastboot \
${BINDIR}/reboot ${BINDIR}/fasthalt

165
sbin/reboot/boot_i386.8
View File

@ -4,6 +4,8 @@
.\" This code is derived from software written and contributed
.\" to Berkeley by William Jolitz.
.\"
.\" Almost completely rewritten for FreeBSD 2.1 by Joerg Wunsch.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
@ -34,6 +36,8 @@
.\"
.\" @(#)boot_i386.8 8.2 (Berkeley) 4/19/94
.\"
.\" $Id$
.\"
.Dd April 19, 1994
.Dt BOOT 8 i386
.Os
@ -48,79 +52,118 @@ An automatic consistency check of the file systems will be performed,
and unless this fails, the system will resume multi-user operations.
.Pp
.Sy Cold starts.
The 386
Most 386
.Tn "PC AT"
clones attempt to boot the floppy disk drive A (otherwise known as drive
0) first, and failing that, attempt to boot the hard disk C (otherwise
known as hard disk controller 1, drive 0).
The automatic boot will attempt to load
.Pa kernel
from partition A of either the floppy or the hard disk.
This boot may be aborted by typing any character on the keyboard repeatedly
(four or five times at least) during the operating system load phase, after
which the bootstrap will prompt for the file that you wish to load instead.
clones attempt to boot the floppy disk drive 0 (otherwise known as
drive A:) first, and failing that, attempt to boot the hard disk
controller 1, drive 0 (otherwise known as drive C:, or drive 0x80 in
the BIOS). The automatic boot will attempt to load
.Pa /kernel
from partition
.Ql a
of either the floppy or the hard disk.
This boot may be aborted by typing any character on the keyboard
at the
.Ql Boot:
prompt. At this time, the following input will be accepted:
.Bl -tag -offset indent -width 10x
.It \&?
Give a short listing of the files in the root directory of the default
boot device, as a hint about available boot files.
.It Op ctrlr(unit,part) Op /filename Op Fl abcCdhrsv
Specify boot file and flags.
.Bl -tag -offset indent -width 10x -compact
.It ctrlr
The controller to boot from. Note that the controller is required
to have BIOS support since the BIOS services are used to load the
boot file image.
.Pp
One exception to this is the
.Ql d
key, which will not abort the load but instead silently force the
.Dv DEBUG
boot flags.
The boot flags for an autoboot are 0, and 3 for the successive boot after
an aborted autoboot sequence.
No other provison is made for setting boot flags (yet).
A specific device or bootstrap file may be used; for example,
.Pp
The file specifications used for the boostrap
when loaded with the
.Dq askme
flag
(e.g. an aborted autoboot)
are of the form:
.Pp
.Dl device unit partition:
.Pp
where
.Ar device
is the type of the device, assumed to be on the ISA bus, to be searched,
.Ar unit
is the unit number of the disk or tape,
and
.Ar partition
is the disk partition or tape file number.
Normal line editing characters can be used when typing the file specification.
The following list of supported devices may vary from installation to
installation:
.Bd -unfilled -offset indent
wd ST506, IDE, ESDI, RLL disks on a WD100[2367] or lookalike
controller
fd 5 1/4" or 3 1/2" High density floppies
.Ed
.Pp
For example,
to boot from a file system which starts at cylinder 0
of unit 0 of an IDE disk, type
.Dq Li wd0a:kernel
to the boot prompt;
.Dq Li fd0a:kernel
would specify a 3 1/2" floppy drive 0 .
.Pp
In an emergency, the bootstrap methods described in the paper
.%T "Installing and Operating 4.3 BSD-Reno UNIX on the AT/386"
can be used
to boot from a distribution tape.
Common controller names are:
.Bl -tag -offset indent -width "wdXX" -compact
.It wd
ST506, IDE, ESDI, RLL disks on a WD100[2367] or lookalike
controller
.It fd
5 1/4" or 3 1/2" High density floppies
.It sd
SCSI disk on any supported SCSI controller
.It cd
boot from CDROM
.It hd
Pseudo-controller, must be used to specify that unit number
1 (known to the BIOS as drive 0x81) is on a different controller
than unit number 0. This can happen for the wd vs. sd case.
.El
.It unit
The unit number of the drive on the controller being used. Either 0
or 1 for the wd and fd and most sd controllers, between 0 and 6 for
some newer sd controllers.
.It part
The partition letter inside the BSD portion of the disk. See
.Xr disklabel 8 .
By convention, only partition
.Ql a
contains a bootable image. If sliced disks are used
.Pq Dq fdisk partitions ,
only the first BSD slice can be used to boot from. The partition
letter does always refer to this slice then.
.It /filename
The pathname of the file to boot; must be inside the root directory
of the specified partition. Defaults to
.Pa /kernel .
Symbolic links are not supported (hard links are).
.It Fl abcCdhrsv
Boot flags:
.Bl -tag -offset indent -width "-CXX" -compact
.It Fl a
ask for the device to install as root file system during kernel
initialisation
.It Fl b
do not automatically reboot after shutdown or crash
.It Fl c
run UserConfig to modify hardware parameters for the loaded
kernel
.It Fl C
boot from CDROM
.It Fl d
enter the DDB kernel debugger
.Pq see Xr ddb 4
before configuring any device (except the system's console)
.It Fl h
toggle serial/graphics console
.It Fl r
do not establish the root directory of the file system
hierarchy on the device where the boot file is being loaded
from
.It Fl s
boot into single-user mode; if the console is marked as
.Dq insecure
.Pq see Xr ttys 5 ,
the root password must be entered
.It Fl v
be verbose during device probing
.El
.El
.El
.Sh FILES
.Bl -tag -width /kernelxx -compact
.It Pa /kernel
system code
.It Pa /boot
system bootstrap
.\" .It Pa /boot
.\" system bootstrap
.El
.Sh SEE ALSO
.Xr ddb 4 ,
.Xr ttys 5 ,
.Xr halt 8 ,
.Xr reboot 8 ,
.Xr shutdown 8
.Xr shutdown 8 ,
.Xr disklabel 8 .
.Sh BUGS
The disklabel format used by this version of
.Bx
is quite
different from that of other architectures.
.Pp
The boot flags are not very self-explanatory, and the alphabet has
too few characters to implement every potentially useful boot option.