MBRLABEL(8) | System Manager's Manual | MBRLABEL(8) |
mbrlabel
—
mbrlabel |
[-fqrw ] [-s
sector] device |
mbrlabel
is used to update a
NetBSD disk label from the Master Boot Record (MBR)
label and Extended Boot Record (EBR) label(s) found on disks that were
previously used on DOS/Windows systems (or other MBR using systems).
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 additional partition entries for the disk from
the EBRs found in those extended partitions.
Each MBR and each EBR 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 occur.
The following options are available:
-f
-q
-r
-w
, also update the on-disk
label.-s
sector-w
-r
.Tn Microsoft corporation, Disk Concepts and Troubleshooting, Tn Microsoft technical library.
mbrlabel
command appeared in NetBSD
1.4.
February 27, 2013 | NetBSD 9.4 |