The offset only affects MBR disks. The
offset defines the byte offset of the partition. If you don??™t specify an offset, the partition begins
at the beginning of the extended partition. The offset you specify must allow enough room for
the partition defined by the size argument. If the offset won??™t allow enough space, the system
changes the offset so that the logical disk can fit within the extended partition.
create partition msr [size=N] [offset=N] [noerr] Creates a Microsoft Reserved
(MSR) partition on a GPT disk. The size argument defines the size of the partition in MB. The
utility uses all of the free space on the disk when you don??™t specify this option. The offset argument
defines the byte offset of the new partition. If you don??™t specify an offset, the utility creates
the partition at the beginning of the first disk extant that??™s large enough to hold it. The offset
is sector snapped. The system rounds up the value of the offset to fill an entire sector.
WARNING MSR partitions can cause a number of problems. The most significant problem is
that Itanium computers won??™t mount an MSR partition. This means you can??™t store data on the
partition or delete it; the partition ends up wasting space on the disk.
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