Int 13/AH=1Ah

ESDI FIXED DISK - FORMAT UNIT (PS)

AH = 1Ah
AL = defect table entry count
CL = format modifiers (see #00250)
DL = drive (80h,81h)
ES:BX -> defect table (see #00251), ignored if AL=00h

Return:
CF set on error
CF clear if successful
AH = status (see #00234 at AH=01h)

Note: If periodic interrupt selected, INT 15/AH=0Fh is called after each cylinder is formatted

See Also: AH=07h - INT 15/AH=0Fh

Bitfields for ESDI format modifiers: Bit(s) Description (Table 00250) 4 generate periodic interrupt 3 perform surface analysis 2 update secondary defect map 1 ignore secondary defect map 0 ignore primary defect map

Format of defect table entry [array]: Offset Size Description (Table 00251) 00h 3 BYTEs relative sector address (little-endian) 03h BYTE flags and defect count

bit 7:
Last logical sector on track

bit 6:
First logical sector on track

bit 5:
Last logical sector on cylinder

bit 4:
Logical sectors are pushed onto next track

bits 3-0:
Number of defects pushed from previous cylinder

Category: Disk I/O Enhancements - Int 13h - E

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