4bh 11 Bytes volume Label Or "no Name    " If None (apparently Taken From

         extended boot record rather than root directory)
 56h   BYTE    terminating null for volume label
 57h   DWORD   serial number
 5Bh  8 BYTEs  filesystem type ("FAT12   " or "FAT16   ")
 63h   BYTE    terminating null for filesystem type

See Also: #2288,#2289

Bitfields for flags describing drive:
Bit(s) Description (Table 2291)
 0 fixed media
 1 door lock ("changeline") supported
 2 current BPB locked
 3 all sectors in a track are the same size
 4 physical drive has multiple logical units
 5 current logical drive for shared physical drive
 6 disk change detected
 7 device parameters were changed (set DASD before formatting)
   (see #1247 at INT 21/AX=440Dh"DOS 3.2+")
 8 disk reformatted (BPB of current media was changed)
 9 access flag (fixed media only, disables reads and writes)
   (see #1253 at INT 21/AX=440Dh"DOS 3.2+")