BOOT_SPARC(8)      OpenBSD System Manager's Manual (SPARC64)     BOOT_SPARC(8)

NAME
     boot - sparc64-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
     System boot blocks are installed near the start of the boot disk using
     the procedure described in installboot(8). The boot program attempts to
     load the kernel from partition ``a'' of the boot device, which must cur-
     rently be an ``sd'' or ``wd'' disk.

     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 -c flag instructs
     the system to enter the ``User Kernel Config'' mode upon startup (see
     boot_config(8)). Other flags are currently ignored.

     The UltraSPARC OpenFirmware will normally load the kernel from the device
     and filename as instructed by the ``boot-device'' and ``boot-file'' vari-
     ables.  If the ``boot-file'' variable is empty, the OpenBSD bootloader
     will look for a kernel named ``bsd'', unless a different filename has
     been specified in the boot command.  To reset this variable to its de-
     fault, empty, value, type the following:

          ok set-default boot-file

   Accessing the PROM during runtime
     If the sysctl(8) variable ddb.console is enabled, 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 ``go''.

FILES
     /bsd      system code
     /ofwboot  system bootstrap

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

OpenBSD 3.0                     April 19, 1994                               1
