MBR(8)             OpenBSD System Manager's Manual (LANDISK)            MBR(8)

NAME
     mbr - LANDISK-specific Master Boot Record

SYNOPSIS
     mbr

DESCRIPTION
     The MBR program comprises only one sector (512 bytes) and includes a par-
     tition table, since the disk is located in the 0th sector of the disk.
     Upon receiving control from the system firmware mbr will scan the parti-
     tion table for an active partition and continue loading the Primary Boot
     Record (PBR) from the beginning of the partition, if found.

     mbr is installed on the disk by fdisk(8), which is also used to operate
     the partition table.

     The partition table consists of four entries, only one of which may be
     marked as ``active''.  The PBR is loaded from there.

DIAGNOSTICS
     A few messages are printed in case of errors:

     No active partition    Indicates that none of the partitions are marked
                            ``active''.

     Read error             An error occurred while fetching the primary boot
                            loader.

     No O/S                 The partition table is empty.

SEE ALSO
     boot(8), boot_landisk(8), bootxx(8), disklabel(8), fdisk(8)

OpenBSD 4.7                      May 31, 2007                                1
