INT 13 - DISK - RESET DISK SYSTEM
AH = 00h
DL = drive (if bit 7 is set both hard disks and floppy disks reset)
Return: AH = status (see AH=01h)
CF clear if successful (returned AH=00h)
CF set on error
Note:   forces controller to recalibrate drive heads (seek to track 0)
SeeAlso: AH=11h,INT 21/AH=0Dh,INT 4E"TI Professional"

See also: 130D

1300 - DISK - RESET DISK SYSTEM