I have a D. drive,which is my internal CD ROM & a F. drive which is my external DVD-RW. The last time that I saw my E.drive was about a couple of weeks ago before I reformatted it due to it being infected with a virus( think that I may have cleared the virus) Could not format it using Windows, so I downloaded a program from www.killdisk.com. But I know other other people have lost items on the pc & thought maybe that this is a glitch with windows xp.