Category: <b>DOS kernel</b>
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<pre><b>INT 21 - DOS 2+ - GET DOS DRIVE PARAMETER BLOCK FOR SPECIFIC DRIVE</b>

	AH = 32h
	DL = drive number (00h = default, 01h = A:, etc)
Return: AL = status
	    00h successful
		DS:BX -&gt; Drive Parameter Block (DPB) (see <a href=../../it/95/13.html>#01395</a>) for specified
			  drive
	    FFh invalid or network drive
Notes:	the OS/2 compatibility box supports the DOS 3.3 version of this call
	  except for the DWORD at offset 12h
	this call updates the DPB by reading the disk; the DPB may be accessed
	  via the DOS list of lists (see <a href=../../it/27/16.html>#01627</a> at AH=52h) if disk access is not
	  desirable.
	undocumented prior to the release of DOS 5.0; only the DOS 4.0+
	  version of the DPB has been documented, however
	supported by DR DOS 3.41+; DR DOS 3.41-6.0 return the same data as
	  MS-DOS 3.31
	IBM ROM-DOS v4.0 also reports invalid/network (AL=FFh) on the ROM drive
SeeAlso: AH=1Fh,AH=52h,AX=7302h

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