Int 13/AH=13h

SyQuest - READ DRIVE PARAMATERS (for DOS 5+)

AH = 13h
DL = drive ID (bit 7 set for hard disks)

Return:
CF set on error
AH = status (07h) (see #00234 at AH=01h)
CF clear if successful
AH = 00h
BL = drive type (AT/PS2 floppies only) (see #00242)
CH = low eight bits of maximum cylinder number
CL = maximum sector number (bits 5-0)
high two bits of maximum cylinder number (bits 7-6)
DH = maximum head number
DL = number of drives
ES:DI -> drive parameter table (floppies only)

Notes: The return values are identical to the standard INT 13/AH=08h, but the number of drives is not limited to 2, so. Scanning all possible drive numbers with the Read DASD Type call (AH=15h) should generally be preferred to determine the number of drives attached to the system.

See Also: AH=08h"PC" - AH=12h"SyQuest" - AH=15h - AH=59h"SyQuest"

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

Interrups Categories Contents