Sun Microsystems Sun Workstation 100U System Manager's Manual page 227

REBOOT (8 )
MAINTENANCE COMMANDS
REBOOT(8)
NAME
reboot - UNIX bootstrapping procedures
SYNOPSIS
Jete/reboot 1-0
I [
-q
I
DESCRIPTION
The UNIX operating system is started by placing it in memory at location zero and transferring
to zero. Since the system is not reenterable, it is necessary to read it in from disk or tape each
time it is to be bootstrapped.
Rebootlns a runnlns system. When a UNIX system is running and a reboot
is desired, shut-
down(8) is normally used. If there are no users then Jete/reboot can be used. Reboot performs
a
sync
operation on the disks, and then a multi-user reboot (as described below) is initiated. This
causes a system to be booted and an automatic disk check to be performed. If all this succeeds
without incident, the system is then brought up for many users.
OPTIONS
FILES
-0
option avoids the sync. It can be used if a disk or the processor is on fire.
-q reboots quickly and ungracefully, without first shutting down running processes.
Power taU and crash recovery. Normally, the system will reboot itself at power-up or after
crashes. Provided the auto-restart is enabled on the machine front panel, an automatic con-
sistency check of the file systems will be performed then and unless this fails the system will
resume multi-user operations.
On both processors, the 600t program finds the corresponding file on the given device, loads that
file into memory location zero, and starts the program at the entry address specified in the pro-
gram header (after clearing off the high bit of the specified entry address.) Normal line editing
characters can be used in specifying the pathname.
For tapes, the minor device number gives a file offset.
/vmunix
/boot
system code
system bootstrap
SEE ALSO
crash(SS), fsck(8), init(8), rc(S), shutdown(8), halt(8), newfs(8)
72
Last change: 28 October 1983
Sun Release 1.1