The purpose of 'SingleDisk' is the same as in the IopCreateArcNames()
function. It is an optimization for that when looking up the
firmware-recognized ARC disks list, in order to match one of these with
the current NT disk being analysed (see e.g. also in IopCreateArcNamesDisk()),
we avoid a possible IopVerifyDiskSignature() call and directly build a
corresponding ARC name NT symbolic link for it.
'SingleDisk' will actually be TRUE, whether the DiskSignatureListHead
list is empty or contains only one element: Indeed in only both these
cases, 'DiskSignatureListHead.Flink->Flink' will refer to the list head.
(If the list is empty but 'SingleDisk' is TRUE, this does not matter,
because the DiskSignatureListHead looking-up loop never starts.)
- Convert PARTITION_TABLE_OFFSET to the number of bytes instead of
(number of bytes) / 2. This avoids many confusing casts
- Use a cache aligned buffer for MBR
- Some "PartitionInfo->PartitionNumber = 0;" are ROS-specific hacks for
xHalIoAssignDriveLetters(), that should be fixed... Mark them as such.
- Un-hardcode some "magic" values (partition IDs, max number of
partition table entries, etc.).
- Use NULL instead of '0' for null-pointers.
- Fix some typos in comments.
