1.\" $NetBSD: boot.8,v 1.7 2003/04/08 03:49:45 lukem 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 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.Ss 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.Ss Cold starts from disk 58The disk-boot program 59.Pa ( /usr/mdec/bootsd ) 60will attempt to load 61.Pa netbsd 62from partition A of the boot device, 63which must currently be an 64.Dq sd 65disk. 66.Ss Cold starts from tape 67The tape-boot program 68.Pa ( /usr/mdec/bootst ) 69will attempt to load 70.Pa netbsd 71from a SCSI tape drive. 72.Ss Cold starts over a network 73The network boot program 74.Pa ( /usr/mdec/netboot ) 75will load 76.Pa netbsd 77from the NFS root as determined by the procedure described in 78.Xr diskless 8 . 79Note that the MVME147 is unable to boot directly from the 80network without the help of a small bootloader program 81.Pa ( /usr/mdec/sboot ) . 82.Ss Boot program options 83.Bl -tag -width xxx 84.It Fl a 85Prompt for the root file system device, the system crash dump 86device, and the path to 87.Xr init 8 . 88.It Fl d 89Bring the system up in debug mode. 90Here it waits for a kernel debugger connect; see 91.Xr ddb 4 . 92.It Fl q 93Boot the system in quiet mode. 94.It Fl s 95Bring the system up in single-user mode. 96.It Fl v 97Boot the system in verbose mode. 98.El 99.Pp 100Any extra flags or arguments, or the 101.Ar \*[Lt]boot string\*[Gt] 102after the -- separator are passed to the boot PROM. 103Other flags are currently ignored. 104.Pp 105At any time you can break to the kernel debugger 106.Xr ddb 4 107(assuming 108.Sy options DDB 109was specified in the kernel configuration file) 110by sending a serial line BREAK character. 111If you do this accidentally you can continue whatever was in progress 112by typing 113.Sq c 114followed by the return key. 115.Sh FILES 116.Bl -tag -width /usr/mdec/installboot -compact 117.It Pa /netbsd 118system code 119.It Pa /usr/mdec/bootxx 120first-level boot block for disks 121.It Pa /usr/mdec/stboot 122first-level boot block for tapes 123.It Pa /usr/mdec/bootsd 124second-level boot block for UFS disks 125.It Pa /usr/mdec/bootst 126second-level boot block for tapes 127.It Pa /usr/mdec/netboot 128boot program for NFS (diskless) boot 129.It Pa /usr/mdec/sboot 130network bootstrap program for MVME147 131.It Pa /usr/mdec/installboot 132program to install bootxx on a disk 133.El 134.Sh SEE ALSO 135.Xr disklabel 8 , 136.Xr fsck 8 , 137.Xr halt 8 , 138.Xr init 8 , 139.Xr rc 8 , 140.Xr shutdown 8 , 141.Xr syslogd 8 142