+++ /dev/null
-.\" Copyright (c) 1991, 1993
-.\" The Regents of the University of California. All rights reserved.
-.\"
-.\" This code is derived from software written and contributed
-.\" to Berkeley by William Jolitz.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\" notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice, this list of conditions and the following disclaimer in the
-.\" documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\" must display the following acknowledgement:
-.\" This product includes software developed by the University of
-.\" California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\" may be used to endorse or promote products derived from this software
-.\" without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" @(#)boot_i386.8 8.2 (Berkeley) 4/19/94
-.\"
-.Dd April 19, 1994
-.Dt BOOT 8 i386
-.Os
-.Sh NAME
-.Nm boot
-.Nd
-system bootstrapping procedures
-.Sh DESCRIPTION
-.Sy Power fail and crash recovery.
-Normally, the system will reboot itself at power-up or after crashes.
-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
-.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 vmunix
-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.
-.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:vmunix
-to the boot prompt;
-.Dq Li fd0a:vmunix
-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.
-.Sh FILES
-.Bl -tag -width /vmunixxx -compact
-.It Pa /vmunix
-system code
-.It Pa /boot
-system bootstrap
-.El
-.Sh SEE ALSO
-.Xr halt 8 ,
-.Xr reboot 8 ,
-.Xr shutdown 8
-.Sh BUGS
-The disklabel format used by this version of
-.Bx
-is quite
-different from that of other architectures.
projects / apple / system_cmds.git / blobdiff