Category: <b>DOS kernel</b>
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<pre><b>INT 21 - DOS 2+ - IOCTL - GET DEVICE INFORMATION</b>

	AX = 4400h
	BX = handle
Return: CF clear if successful
	    DX = device information word (see <a href=../../it/23/14.html>#01423</a>)
	    AX destroyed
	CF set on error
	    AX = error code (01h,05h,06h) (see <a href=../../it/80/16.html>#01680</a> at AH=59h/BX=0000h)
Notes:	value in DH corresponds to high byte of device driver's attribute word
	  if handle refers to a character device
	Novell NetWare reportedly does not return a drive number in bits 5-0
	  for a disk file
	this function was not supported by Digital Research's DOS Plus
SeeAlso: AX=4401h,INT 2F/AX=122Bh

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