162939Sbostic.\" Copyright (c) 1990, 1991, 1993 262939Sbostic.\" The Regents of the University of California. All rights reserved. 344702Sbostic.\" 444702Sbostic.\" This code is derived from software contributed to Berkeley by 544702Sbostic.\" the Systems Programming Group of the University of Utah Computer 644702Sbostic.\" Science Department. 744702Sbostic.\" 850485Scael.\" %sccs.include.redist.roff% 944702Sbostic.\" 10*67001Smckusick.\" @(#)boot_hp300.8 8.2 (Berkeley) 04/19/94 1150485Scael.\" 1247463Scael.Dd 13*67001Smckusick.Dt BOOT_HP300 8 hp300 1450485Scael.Os 1547463Scael.Sh NAME 1651434Sbostic.Nm boot 1747463Scael.Nd 1851434Sbosticsystem bootstrapping procedures 1947463Scael.Sh DESCRIPTION 2047463Scael.Sy Power fail and crash recovery. 2144702SbosticNormally, the system will reboot itself at power-up or after crashes. 2244702SbosticAn automatic consistency check of the file systems will be performed, 2344702Sbosticand unless this fails, the system will resume multi-user operations. 2447463Scael.Pp 2547463Scael.Sy Cold starts. 2651434SbosticOn an HP300, the boot procedure uses the boot ROM to load a boot program 2747463Scaelfrom an 2847463Scael.Tn LIF 2947463Scaelformat directory at the beginning of an attached disk. 3047463ScaelThe 3147463Scael.Pa /usr/mdec 3251434Sbosticdirectory contains a disk boot programs which should be placed in a 3351434Sbosticnew pack automatically by 3447463Scael.Xr newfs 8 3544702Sbosticwhen the ``a'' partition file system on the pack is created. 3647463Scael.Pp 3744702SbosticThis 3847463Scael.Em boot 3944702Sbosticprogram 4044702Sbosticfinds the corresponding file on the given device 4147463Scael.Pf ( Ar vmunix 4244702Sbosticby default), 4344702Sbosticloads that file into memory, 4444702Sbosticand starts the program at the entry address specified in the program header. 4547463Scael.Pp 4644702SbosticThe boot program can be interrupted by typing `^C' (ctrl-C). 4744702SbosticThis will force the boot program to interactively prompt for a system to boot. 4844702SbosticIf not interrupted, it will boot from the device from which the boot 4944702Sbosticprogram itself was loaded. 5047463Scael.Pp 5144702SbosticThe file specifications used for an interactive boot are of the form: 5247463Scael.Pp 5351434Sbostic.Dl device(unit, minor) 5447463Scael.Pp 5544702Sbosticwhere 5647463Scael.Ar device 5744702Sbosticis the type of the device to be searched, 5847463Scael.Ar unit 5944702Sbosticis 8 * the hpib number plus the unit number of the disk or tape, 6044702Sbosticand 6147463Scael.Ar minor 6244702Sbosticis the disk partition or tape file number. 6344702SbosticNormal line editing characters can be used when typing the file specification. 6451434SbosticCurrently, ``rd'' and ``sd'' are the only valid 6547463Scael.Ar device 6651434Sbosticspecifiers. 6747463Scael.Pp 6844702SbosticFor example, 6944702Sbosticto boot from the `a' file system of unit 0 on HP-IB 2, 7047463Scaeltype 7151434Sbostic.Ql rd(16, 0)vmunix 7244702Sbosticto the boot prompt. 7344702SbosticFor tapes, the minor device number gives a file offset. 7447463Scael.Pp 7544702SbosticIn an emergency, the bootstrap methods described in the paper 7647463Scael.%T Installing 4.3bsd on the HP300 7744702Sbosticcan be used to boot from a distribution tape. 7847463Scael.Sh FILES 7947463Scael.Bl -tag -width /usr/mdec/installboot -compact 8047463Scael.It Pa /vmunix 8147463Scaelsystem code 8247463Scael.It Pa /usr/mdec/bootrd 8347463Scael.Tn LIF 8447463Scaelformat boot block 8547463Scael.It Pa /usr/mdec/installboot 8647463Scaelprogram to install boot blocks 8747463Scael.El 8847463Scael.Sh SEE ALSO 8947463Scael.Xr halt 8 , 9051434Sbostic.Xr reboot 8 , 9151434Sbostic.Xr shutdown 8 92