Int 13/AH=18h

DISK - SET MEDIA TYPE FOR FORMAT (AT model 3x9,XT2,XT286,PS)

AH = 18h
DL = drive number
CH = lower 8 bits of highest cylinder number (number of cylinders - 1)
CL = sectors per track (bits 0-5)
top 2 bits of highest cylinder number (bits 6,7)

Return:
AH = status
00h requested combination supported
01h function not available
0Ch not supported or drive type unknown
80h there is no disk in the drive
ES:DI -> 11-byte parameter table (see #01264 at INT 1E)

Note: This function does not set the INT 1E vector to point at the returned parameter table; it is the caller's responsibility to do so

See Also: AH=05h - AH=07h - AH=17h - INT 1E

Category: Bios - Int 13h - D

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