Marilyn, Yes, they are the Psychic Disk Raiders. I've had a bad case myself. Looks suspiciously like Operator Error but that's what They want you to think. AZ Build a Lookaround! The Lookaround Book, 4Th ed. Now an E-book. http://www.panoramacamera.us > -------- Original Message -------- > Subject: Off topic, but I've just got to know > From: Marilyn <marilyn@xxxxxxxxxxx> > Date: Tue, February 28, 2006 9:21 am > To: List for Photo/Imaging Educators - Professionals - Students > <photoforum@xxxxxxxxxxxxxxxxxxxxxx> > > What happens to a disk when the message - "This disk is not formatted," > appears on my computer screen, yet it is a disk that I've been using for > several months? > > Yesterday I was working on a project, stored the material on a disk, went to > bed, woke up this morning and tried to retrieve the work and I can't > retrieve it. Does the disk just wear out? > > Did aliens zap it with electrical impulse weapons while I slept? > > Are there such things as little "disk raiders" who creep in during the night > and erase material stored on disks as a form of entertainment? > > Why does this happen to the disks that I don't back up because, "Just this > once I'll store material on one disk without backing it up" (are the disk > raiders/aliens psychic?)? > > Just wondering. > > Marilyn