Int13h AH=01h(磁碟 - 取得最新的運算狀態) -- BIOS Int13h

GET STATUS OF LAST OPERATION

Input:

AH = 01h
DL = drive (bit 7 set for hard disk)
Return: 
CF clear if successful (returned status 00h)
CF set on error
AH = status of previous operation (see Values for disk operation status)

Note: some BIOSes return the status in AL; the PS/2 Model 30/286 returns the status in both AH and AL.