@ECHO OFF
;;The last drive before a non-existent drive whose
;;Volume Label is VDISK or MS-RAMDRIVE, is RAMDRIVE.
;;If ENV-var XMASS has been set (in config.sys),
;;USB/1394 mass-storage(s) might take the last letter
;;after RAMDISK thus only the Label rule is reliable.
;;In 2nd round, this detects the last USB/1394 drive.

IF NOT "%XMASS%"=="" AND "%LABEL%"=="" GOTO WMASS
IF NOT "%LABEL%"=="" SET ROUND=2

:LOOP
IF NOT EXIST %1:\NUL GOTO SOLVED
SET BUFF=%1
SHIFT
IF NOT "%1"=="" GOTO LOOP
GOTO END

:SOLVED
IF "%BUFF%"=="" GOTO END
ASET LABEL=LABEL('%BUFF%')
SET LABEL=_%LABEL%
IF "%LABEL%"=="_VDISK" OR "%LABEL%"=="_MS-RAMDRIVE" GOTO FOUND
IF "%ROUND%"=="2" SET ASPIMASS=%BUFF%
GOTO END

:WMASS
ASET LABEL=LABEL('%1')
SET LABEL=_%LABEL%
IF "%LABEL%"=="_VDISK" OR "%LABEL%"=="_MS-RAMDRIVE" SET RAMD=%1
SHIFT
IF NOT "%1"=="" GOTO WMASS
detecdrv %LGLDRV%

:FOUND
SET RAMD=%BUFF%

:END
SET LGLDRV=
SET BUFF=
SET LABEL=
SET ROUND=