mbr man page on OpenBSD

mbr man page on OpenBSD

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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
     partition table, since the disk is located in the 0th sector of the disk.
     Upon receiving control from the system firmware mbr will scan the
     partition 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 4.9			 May 31, 2007			   OpenBSD 4.9

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