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\"     @(#)boot_sparc.8 8.2 (Berkeley) 4/19/94
\"
Dd April 8, 2003
Dt BOOT 8 mvme68k
Os
Sh NAME
Nm boot
Nd
system bootstrapping procedures
\" .Sh SYNOPSIS
\" .Nm reboot
\" .Op Fl n
\" .Op Fl q
\" .Oo
\" .Ar -- <boot string>
\" .Oc
Sh DESCRIPTION
Ss Power fail and crash recovery
Normally, the system will reboot itself at power-up or after crashes.
An automatic consistency check of the file systems will be performed
as described in
Xr fsck 8 .
and unless this fails, the system will resume multi-user operations.
Ss Cold starts from disk
The disk-boot program
Pa ( /usr/mdec/bootsd )
will attempt to load
Pa netbsd
from partition A of the boot device,
which must currently be an
Dq sd
disk.
Ss Cold starts from tape
The tape-boot program
Pa ( /usr/mdec/bootst )
will attempt to load
Pa netbsd
from a SCSI tape drive.
Ss Cold starts over a network
The network boot program
Pa ( /usr/mdec/netboot )
will load
Pa netbsd
from the NFS root as determined by the procedure described in
Xr diskless 8 .
Note that the MVME147 is unable to boot directly from the
network without the help of a small bootloader program
Pa ( /usr/mdec/sboot ) .
Ss Boot program options
Bl -tag -width xxx
It Fl a
Prompt for the root file system device, the system crash dump
device, and the path to
Xr init 8 .
It Fl d
Bring the system up in debug mode.
Here it waits for a kernel debugger connect; see
Xr ddb 4 .
It Fl q
Boot the system in quiet mode.
It Fl s
Bring the system up in single-user mode.
It Fl v
Boot the system in verbose mode.
El
Pp
Any extra flags or arguments, or the
Ar <boot string>
after the -- separator are passed to the boot PROM.
Other flags are currently ignored.
Pp
At any time you can break to the kernel debugger
Xr ddb 4
(assuming
Sy options DDB
was specified in the kernel configuration file)
by sending a serial line BREAK character.
If you do this accidentally you can continue whatever was in progress
by typing
Sq c
followed by the return key.
Sh FILES
Bl -tag -width /usr/mdec/installboot -compact
It Pa /netbsd
system code
It Pa /usr/mdec/bootxx
first-level boot block for disks
It Pa /usr/mdec/stboot
first-level boot block for tapes
It Pa /usr/mdec/bootsd
second-level boot block for UFS disks
It Pa /usr/mdec/bootst
second-level boot block for tapes
It Pa /usr/mdec/netboot
boot program for NFS (diskless) boot
It Pa /usr/mdec/sboot
network bootstrap program for MVME147
It Pa /usr/mdec/installboot
program to install bootxx on a disk
El
Sh SEE ALSO
Xr disklabel 8 ,
Xr fsck 8 ,
Xr halt 8 ,
Xr init 8 ,
Xr rc 8 ,
Xr shutdown 8 ,
Xr syslogd 8

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