I had the same type of problem happen twice with my 500GB CEU2 Drivestation, once after resuming from sleep mode it lost all ability to access sub-folders on the drive, the drive usage was showing up correctly but I just had empty folders and no sub-folders at all. The second time it happened was after a system crash, which wasn't through using the drive, it wasn't being accessed at the time and in both instances the drive was formated to NTFS.
There is a problem with these drives as can be seen here http://www.everythingusb.com/buffalo-drivestation-hd-ceu2-usb-hard-drive-16085.html and a firmware patch has been made available here http://www.buffalotech.com/support/downloads/ which I applied, but it didn't get my data back, so to be honest I'm not going to risk loosing data a third time in order to see if the patch actually works. This drive has been assigned to the garbage bin and through my experiences Buffalo have lost a customer for life.
Am I missing something in this post? Where's the solution to the problem? Is formatting to NTFS the solution? If so it didn't work for me, my drive was formatted to NTFS from the get go.
Message Edited by Gazzaho on 04-29-2009 08:37 PM