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@(#)boot_sparc.8 8.2 (Berkeley) 4/19/94
.Dd April 19, 1994 .Dt BOOT 8 sun3 .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 A disk-boot program
a ( /usr/mdec/ufsboot ) will attempt to load
a netbsd from partition A of the boot device, which must currently be an .Dq sd disk. Alternatively, network boot program
a ( /usr/mdec/netboot ) will load
a netbsd from the NFS root as determined by the procedure described in .Xr diskless 8 .
p The .Fl s flag to the boot loader will bring the system up in single-user mode. The .Fl a flag instructs the system to prompt for the location of the root filesystem and the primary swap partition. The .Fl d flag to the boot loader will bring the system up in debug mode. Here it waits for a kernel debugger connect; see .Xr ddb 4 . The .Fl q flag to the boot loader would boot the system in quiet mode, .Fl v in verbose mode. Any extra flags or arguments, the after the -- separator, .Ar \*[Lt]boot string\*[Gt] are passed to the boot prom. Other flags are currently ignored.
p At any time you can break back to the rom by pressing the `L1' and `a' keys at the same time (if the console is a serial port the same is achieved by sending a `break'). If you do this accidentally you can continue whatever was in progress by typing `c' followed by the return key. .Sh FILES l -tag -width /usr/mdec/installboot -compact t Pa /netbsd system code t Pa /usr/mdec/bootxx first-level boot block for disks t Pa /usr/mdec/netboot boot program for NFS (diskless) boot t Pa /usr/mdec/ufsboot second-level boot program for UFS disks t Pa /usr/mdec/installboot program to install bootxx on a disk .El .Sh SEE ALSO .Xr crash 8 , .Xr disklabel 8 , .Xr fsck 8 , .Xr halt 8 , .Xr init 8 , .Xr rc 8 , .Xr shutdown 8 , .Xr syslogd 8
Indexes created Sun Oct 19 16:10:00 GMT 2025