INT 13 - Bootable CD-ROM - GET STATUS

	AX = 4B01h
	DL = drive number
	DS:SI -> empty specification packet (see #00281)
Return: CF clear if successful
	CF set on error
	AX = return codes
	DS:SI specification packet filled
Note:	same as AX=4B00h, but does not terminate emulation
SeeAlso: AH=48h,AH=4Ah,AX=4B00h,AH=4Ch,AH=4Dh