1.\" $NetBSD: boot.8,v 1.3 2001/09/08 01:34:39 wiz Exp $ 2.\" 3.\" Copyright (c) 1992, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)boot_sparc.8 8.2 (Berkeley) 4/19/94 35.\" 36.Dd November 28, 1999 37.Dt BOOT 8 mvme68k 38.Os 39.Sh NAME 40.Nm boot 41.Nd 42system bootstrapping procedures 43.\" .Sh SYNOPSIS 44.\" .Nm reboot 45.\" .Op Fl n 46.\" .Op Fl q 47.\" .Oo 48.\" .Ar -- <boot string> 49.\" .Oc 50.Sh DESCRIPTION 51.Sy Power fail and crash recovery 52Normally, the system will reboot itself at power-up or after crashes. 53An automatic consistency check of the file systems will be performed 54as described in 55.Xr fsck 8 . 56and unless this fails, the system will resume multi-user operations. 57.Pp 58.Sy Cold starts from disk 59The disk-boot program (/usr/mdec/bootsd) will attempt to load 60.Pa netbsd 61from partition A of the boot device, 62which must currently be an ``sd'' disk. 63.Pp 64.Sy Cold starts from tape 65The tape-boot program (/usr/mdec/bootst) will attempt to load 66.Pa netbsd 67from a SCSI tape drive. 68.Pp 69.Sy Cold starts over a network 70The network boot program (/usr/mdec/netboot) will load 71.Pa netbsd 72from the NFS root as determined by the procedure described in 73.Xr diskless 8 . 74Note that the MVME147 is unable to boot directly from the 75network without the help of a small bootloader program 76(/usr/mdec/sboot). 77.Pp 78The 79.Op Fl s 80flag to the boot loader will bring the system up in single-user mode. 81The 82.Op Fl a 83flag instructs the system to prompt for the location of the root filesystem 84and the primary swap partition. 85The 86.Op Fl d 87flag to the boot loader will bring the system up in debug mode. 88Here it waits for a kernel debugger connect; see 89.Xr ddb 4 . 90The 91.Op Fl q 92flag to the boot loader would boot the system in 93quiet mode, 94.Op Fl v 95in verbose mode. 96Any extra flags or arguments, the after the -- separator, 97.Ar <boot string> 98are passed to the boot prom. 99Other flags are currently ignored. 100.Pp 101At any time you can break to the kernel debugger 102.Xr ddb 4 103(assuming 104.Sy options DDB 105was specified in the kernel configuration file) 106by sending a serial line BREAK character. 107If you do this accidentally you can continue whatever was in progress 108by typing `c' followed by the return key. 109.Pp 110.Sh FILES 111.Bl -tag -width /usr/mdec/installboot -compact 112.It Pa /netbsd 113system code 114.It Pa /usr/mdec/bootxx 115first-level boot block for disks 116.It Pa /usr/mdec/stboot 117first-level boot block for tapes 118.It Pa /usr/mdec/bootsd 119second-level boot block for UFS disks 120.It Pa /usr/mdec/bootst 121second-level boot block for tapes 122.It Pa /usr/mdec/netboot 123boot program for NFS (diskless) boot 124.It Pa /usr/mdec/sboot 125network bootstrap program for MVME147 126.It Pa /usr/mdec/installboot 127program to install bootxx on a disk 128.El 129.Sh SEE ALSO 130.Xr disklabel 8 , 131.Xr fsck 8 , 132.Xr halt 8 , 133.Xr init 8 , 134.Xr rc 8 , 135.Xr shutdown 8 , 136.Xr syslogd 8 137