INT 21 - Novell NetWare - FILE SERVER - GET PHYSICAL DISK STATISTICS
        AH = E3h subfn D8h
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status
            00h successful
            C6h no console rights
Notes:  this function is supported by Advanced NetWare 2.1+
        the calling workstation must have console operator privileges
SeeAlso: AH=E3h/SF=C8h,AH=E3h/SF=D9h,AH=E3h/SF=E9h

Format of request buffer:
Offset  Size    Description
 00h    WORD    0002h (length of following data)
 02h    BYTE    D8h (subfunction "Get Physical Disk Statistics")
 03h    BYTE    physical disk number

Format of reply buffer:
Offset  Size    Description
 00h    WORD    (call) 005Dh (size of following results record)
 02h    DWORD   (big-endian) clock ticks since system started
 06h    BYTE    physical disk channel
 07h    BYTE    flag: drive removable if nonzero
 08h    BYTE    physical drive type
 09h    BYTE    drive number within controller
 0Ah    BYTE    controller number
 0Bh    BYTE    controller type
 0Ch    DWORD   (big-endian) size of drive in 4K disk blocks
 10h    WORD    (big-endian) number of cylinders on drive
 12h    BYTE    number of heads
 13h    BYTE    number of sectors per track
 14h 64 BYTEs   ASCIZ drive make and model
 54h    WORD    (big-endian) number of I/O errors
 56h    DWORD   (big-endian) start of Hot Fix table
 5Ah    WORD    (big-endian) size of Hot Fix table
 5Ch    WORD    (big-endian) number of Hot Fix blocks available
 5Eh    BYTE    flag: Hot Fix disabled if nonzero

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