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NetBSD 6.1.5 - man page for mbrlabel (netbsd section 8)

MBRLABEL(8)			   BSD System Manager's Manual			      MBRLABEL(8)

     mbrlabel -- update disk label from MBR label(s)

     mbrlabel [-fqrw] [-s sector] device

     mbrlabel is used to update a NetBSD disk label from the Master Boot Record (MBR) label(s)
     found on disks that were previously used on DOS/Windows systems (or other MBR using sys-

     mbrlabel scans the MBR contained in the very first block of the disk (or the block specified
     through the -s flag), then walks through every extended partition found and generates addi-
     tional partition entries for the disk from the MBRs found in those extended partitions.

     Each MBR partition which does not have an equivalent partition in the disk label (equivalent
     in having the same size and offset) is added to the first free partition slot in the disk
     label.  A free partition slot is defined as one with an fstype of 'unused' and a size of
     zero ('0').  If there are not enough free slots in the disk label, a warning will be issued.

     The raw partition (typically partition c, but d on i386 and some other platforms) is left
     alone during this process.

     By default, the proposed changed disk label will be displayed and no disk label update will

     Available options:

     -f 	Force an update, even if there has been no change.

     -q 	Performs operations in a quiet fashion.

     -r 	In conjunction with -w, also update the on-disk label.

     -s sector	Specifies the logical sector number that has to be read from the disk in order to
		find the MBR.  Useful if the disk has remapping drivers on it and the MBR is
		located in a non-standard place.  Defaults to 0.

     -w 	Update the in-core label if it has been changed.  See also -r.

     disklabel(8), dkctl(8), fdisk(8), mbr(8)

     The mbrlabel command appeared in NetBSD 1.4.

BSD					  April 5, 2010 				      BSD

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