In addition, GTP disks
require a specific partition layout. Adding an MSR partition could disrupt the layout and make the
disk unreadable. On GPT disks used to start Windows XP 64-bit Edition (Itanium), the EFI System
partition is the first partition on the disk, followed by the MSR partition. GPT disks used only for
data storage don??™t have an EFI System partition; the MSR partition is the first partition.
create partition primary[size=N] [offset=N] [ID={Byte | GUID}] [align=N]
[noerr] Creates a primary partition on a disk. The utility gives the new partition the focus
once the system creates it. The system snaps the partition size to the cylinder size. For example,
if you specify a size of 500 MB, the system rounds up the size of the partition to 504 MB. The system
uses all of the free space on the disk when you don??™t define a partition size. 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. Microsoft sets the ID argument
aside for OEMs.
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