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Bitfields for IBM/MS INT 13 Extensions information flags

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Bit Description

0

DMA boundary errors handled transparently

1

cylinder/head/sectors-per-track information is valid

2

removable drive

3

write with verify supported

4

drive has change-line support (required if drive >= 80h is removable)

5

drive can be locked (required if drive >= 80h is removable)

6

CHS information set to maximum supported values, not current media

15 - 7

reserved (0)

Note:

bits 4-6 are only valid if bit 2 is set

See Also:

#00273