Hi there! long time no see.
If you have drive letters it implies you are still running some version of Windows, and I seem to remember that you were using XP.
So. Start => Control Panel => Administrative tools.
In the Computer Management control panel there is an option for "Disk Management".
If you right-click a device or partition, there is an option "Change Drive letter and Path" to allow the drive letter to be re-assigned.
I see from an earlier thread that you were going to format a blank partition on your disk. If you did so, it might be that after you did, that the new volume grabbed the old drive letter, and everything else has had to shift around to make room for it.
I am not familiar with code 41. Where do you see that?
