Compatibility: 4.0+
Expects: AX    440dH
BX    drive (0=default, 1=A, 2=B, etc.)
CL    46H
CH    08H (device category: block device)
DS:DX addr of an IoctlMediaIdRec containing desired settings
                                                                  
Returns: AX    error code  if CF is set to CY
                                                                  
Info: Sets the volume label, serial number, and file system ID for the
specified drive.

This writes directly to the boot sector of the disk.

You may wish to use Fn 440dH 66H (query Media ID) to pre-fill the
IoctlMediaIdRec, then just change one or two settings before
calling this fn.

See Also: Fn 44H (IOCTL)
Fn 440dH (generic IOCTL for block devices)
Fn 440dH 66H (query media ID)
- -

DOS Fn 440dH CL=46H: IOCTL Set Media ID