BOOT_SUN3(8)        OpenBSD System Manager's Manual (Sun3)        BOOT_SUN3(8)

NAME
     boot - sun3-specific system bootstrapping procedures

DESCRIPTION
   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 de-
     scribed in fsck(8). and unless this fails, the system will resume multi-
     user operations.

   Cold starts
     A disk-boot program (/usr/mdec/ufsboot) will attempt to load bsd from
     partition ``a'' of the boot device, which must currently be an ``sd''
     disk.  Alternatively, the network boot program (/usr/mdec/netboot) will
     load bsd from the NFS root as determined by the procedure described in
     diskless(8).

     The -s flag to the bootloader will bring the system up in single-user
     mode.  The -a flag instructs the system to prompt for the location of the
     root filesystem and the primary swap partition.  The -d flag to the boot-
     loader will bring the system up in debug mode.  Here it waits for a ker-
     nel debugger connect; see ddb(8). Other flags are currently ignored.

     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.

FILES
     /bsd                   system code
     /usr/mdec/bootxx       first-level boot block for disks
     /usr/mdec/netboot      boot program for NFS (diskless) boot
     /usr/mdec/ufsboot      second-level boot program for UFS disks
     /usr/mdec/installboot  program to install bootxx on a disk

SEE ALSO
     crash(8), disklabel(8), fsck(8), halt(8), init(8), rc(8), shutdown(8),
     syslogd(8)

OpenBSD 2.9                     April 19, 1994                               1
