162937Sbostic.\" Copyright (c) 1980, 1991, 1993 262937Sbostic.\" The Regents of the University of California. All rights reserved. 335065Skarels.\" 443797Strent.\" %sccs.include.redist.man% 535065Skarels.\" 6*67001Smckusick.\" @(#)boot_tahoe.8 8.2 (Berkeley) 04/19/94 736179Sbostic.\" 847463Scael.Dd 9*67001Smckusick.Dt BOOT 8 tahoe 1051434Sbostic.Os 1147463Scael.Sh NAME 1251434Sbostic.Nm boot 1347463Scael.Nd 1451434Sbosticsystem bootstrapping procedures 1547463Scael.Sh DESCRIPTION 1647463Scael.Sy Power fail and crash recovery. 1735065SkarelsNormally, the system will reboot itself at power-up or after crashes. 1851434SbosticAn automatic consistency check of the file systems will be performed, 1935065Skarelsand unless this fails, the system will resume multi-user operations. 2047463Scael.Pp 2151434Sbostic.Sy Cold starts. 2235065SkarelsThese are processor-type dependent. 2347463ScaelOn the 2447463Scael.Tn CCI 2547463ScaelPower 6/32 and related processors, 2635065Skarelsthe system will do a standard autoboot from drive 0 2735065Skarelsupon power-up or reset. 2847463ScaelThis automatic boot may be cancelled by typing a 2947463Scael.Ql \&# 3035065Skarelsin the first few seconds after reset. 3147463ScaelThis enters console mode; the console prompt is 3247463Scael.Ql > 3347463Scaelor 3447463Scael.Ql \&# . 3547463ScaelThe boot flags can be set to any hexadecimal value 3647463Scael.Fl n 3747463Scaelwith the command 3847463Scael.Pp 3947463Scael.Bd -filled -offset indent -compact 4047463Scael.Li \&#> p23 4147463Scael.Ar n . 4247463Scael.Ed 4347463Scael.Pp 4435065SkarelsThe default device may be examined or set; see the Diagnostics and Debugging 4535065Skarelsmanual for the processor for details on device naming and syntax. 4635065SkarelsAfter setting the boot flags and/or device, 4735065Skarelsa bootstrap sequence can be initiated with 4847463Scael.Pp 4947463Scael.Dl #> fb 5047463Scael.Pp 5135065SkarelsA specific device or bootstrap file may be used; for example, 5247463Scael.Pp 5347463Scael.Dl \&#> \&fb xfd(1,0) 5447463Scael.Pp 5547463Scaelwould boot from the `a' partition on 5647463Scael.Tn XFD 5747463Scaeldrive 1. 5847463Scael.Pp 5935065SkarelsThe file specifications used for the boostrap 6047463Scaelwhen loaded with the 6147463Scael.Dq askme 6247463Scaelflag 6335065Skarels(register 23 set to 1 or 3) 6435065Skarelsare of the form: 6547463Scael.Pp 6647463Scael.Dl device(adaptor,controller,unit,minor) 6747463Scael.Pp 6835065Skarelswhere 6947463Scael.Ar device 7035065Skarelsis the type of the device to be searched, 7147463Scael.Ar adaptor 7247463Scaelis number of the 7347463Scael.Tn VERSAbus 7447463Scael(or 7547463Scael.Tn VMEbus ) 7647463Scaelto which the device is attached, 7747463Scael.Ar controller 7835065Skarelsis the unit number of the controller on that buss, 7947463Scael.Ar unit 8035065Skarelsis the unit number of the disk or tape, 8135065Skarelsand 8247463Scael.Ar minor 8335065Skarelsis the disk partition or tape file number. 8435065SkarelsLeading adaptor or controller numbers default to 0. 8535065SkarelsNormal line editing characters can be used when typing the file specification. 8635065SkarelsThe following list of supported devices may vary from installation to 8735065Skarelsinstallation: 8847463Scael.Pp 8947463Scael.Bd -unfilled -offset indent -compact 9047463Scaeldk SMD or ESDI disks on VDDC or SMD-E 9147463Scaelcy tape on Ciprico Tapemaster controller 9247463Scael.Ed 9347463Scael.Pp 9435065SkarelsFor example, 9535065Skarelsto boot from a file system which starts at cylinder 0 9647463Scaelof unit 0 of an 9747463Scael.Tn SMD-E 9847463Scaeldisk, type 9947463Scael.Ql dk(0,0)vmunix 10047463Scaelto the boot prompt; 10147463Scael.Ql dk(2,1,0)vmunix 10247463Scaelwould specify drive 1 on 10347463Scael.Tn SMD-E 10447463Scaelcontroller 2. 10547463Scael.Pp 10635065SkarelsIn an emergency, the bootstrap methods described in the paper 10747463Scael.%T "Installing and Operating 4.3 BSD-tahoe UNIX on the Tahoe" 10847463Scaelcan be used 10935065Skarelsto boot from a distribution tape. 11047463Scael.Sh FILES 11147463Scael.Bl -tag -width /vmunix -compact 11247463Scael.It Pa /vmunix 11347463Scaelsystem code 11447463Scael.It Pa /boot 11547463Scaelsystem bootstrap 11647463Scael.El 11747463Scael.Sh SEE ALSO 11847463Scael.Xr halt 8 , 11951434Sbostic.Xr reboot 8 , 12051434Sbostic.Xr shutdown 8 12147463Scael.Sh BUGS 12235065SkarelsThe disklabel format used by some versions of the console processor 12347463Scaelis different than the format used by 12447463Scael.Tn UNIX 12547463Scaeland the bootstrap. 12647463Scael.Sh HISTORY 127