1.\" $NetBSD: boot.8,v 1.13 2003/05/03 23:15:31 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 April 8, 2003 37.Dt BOOT 8 sun3 38.Os 39.Sh NAME 40.Nm boot 41.Nd system bootstrapping procedures 42.\" .Sh SYNOPSIS 43.\" .Nm reboot 44.\" .Op Fl n 45.\" .Op Fl q 46.\" .Oo 47.\" .Ar -- <boot string> 48.\" .Oc 49.Sh DESCRIPTION 50.Ss Power fail and crash recovery 51Normally, the system will reboot itself at power-up or after crashes. 52An automatic consistency check of the file systems will be performed 53as described in 54.Xr fsck 8 , 55and unless this fails, the system will resume multi-user operations. 56.Ss Cold starts 57A disk-boot program 58.Pa ( /usr/mdec/ufsboot ) 59will attempt to load 60.Pa netbsd 61from partition A of the boot device, 62which must currently be an 63.Dq sd 64disk. 65Alternatively, network boot program 66.Pa ( /usr/mdec/netboot ) 67will load 68.Pa netbsd 69from the NFS root as determined by the procedure described in 70.Xr diskless 8 . 71.Ss Boot program options 72.Bl -tag -width xxx 73.It Fl a 74Prompt for the root file system device, the system crash dump 75device, and the path to 76.Xr init 8 . 77.It Fl d 78Bring the system up in debug mode. 79Here it waits for a kernel debugger connect; see 80.Xr ddb 4 . 81.It Fl q 82Boot the system in quiet mode. 83.It Fl s 84Bring the system up in single-user mode. 85.It Fl v 86Boot the system in verbose mode. 87.El 88.Pp 89Any extra flags or arguments, or the 90.Aq Ar boot string 91after the -- separator are passed to the boot PROM. 92Other flags are currently ignored. 93.Pp 94At any time you can break back to the ROM by pressing the 95.Sq L1 96and 97.Sq a 98keys at the same time (if the console is a serial port the same is 99achieved by sending a 100.Sq break ) . 101If you do this accidentally you can continue whatever was in progress 102by typing 103.Sq c 104followed by the return key. 105.Sh FILES 106.Bl -tag -width /usr/mdec/installboot -compact 107.It Pa /netbsd 108system code 109.It Pa /usr/mdec/bootxx 110first-level boot block for disks 111.It Pa /usr/mdec/netboot 112boot program for NFS (diskless) boot 113.It Pa /usr/mdec/ufsboot 114second-level boot program for UFS disks 115.It Pa /usr/mdec/installboot 116program to install bootxx on a disk 117.El 118.Sh SEE ALSO 119.Xr disklabel 8 , 120.Xr fsck 8 , 121.Xr halt 8 , 122.Xr init 8 , 123.Xr rc 8 , 124.Xr shutdown 8 , 125.Xr syslogd 8 126