I have a Latitude E6420 and just installed Win 7 64 Bit. In the bios it is set to RAID. In Windows Explorer it looks like I have two hard drives, C & D. I can't right click my D and see the word Eject. It is called a Local Disk not a DVD. I have went into Device Mgr and removed it and restarted and it will show up as a DVD for about three seconds and then reverts back to a hard drive or local disk. Is there a fix for this?