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Diffstat (limited to 'sbin/reboot/boot_i386.8')
| -rw-r--r-- | sbin/reboot/boot_i386.8 | 169 |
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diff --git a/sbin/reboot/boot_i386.8 b/sbin/reboot/boot_i386.8 new file mode 100644 index 0000000..0e89b94 --- /dev/null +++ b/sbin/reboot/boot_i386.8 @@ -0,0 +1,169 @@ +.\" 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. +.\" +.\" 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: +.\" 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 +.\" +.\" $Id: boot_i386.8,v 1.3 1995/10/07 12:05:00 joerg Exp $ +.\" +.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. +Most 386 +.Tn "PC AT" +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 +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 +initialization +.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 +.El +.Sh SEE ALSO +.Xr ddb 4 , +.Xr ttys 5 , +.Xr halt 8 , +.Xr reboot 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. |
