┌──────────────────────────────────────────────────────┐
│Field                        Length       C Datatype  │
├──────────────────────────────────────────────────────┤
│Extended BPB for Devices     31 BYTES     BYTE[31]    │
├──────────────────────────────────────────────────────┤
│Number of Cylinders          WORD         USHORT      │
├──────────────────────────────────────────────────────┤
│Device Type                  BYTE         BYTE        │
├──────────────────────────────────────────────────────┤
│Device Attributes            WORD         USHORT      │
└──────────────────────────────────────────────────────┘

Related C Data Structure

The BIOSPARAMETERBLOCK data structure can be used by C programmers.

To include this data structure in your file, make sure INCL_DOSDEVIOCTL is defined before you include OS2.H.