Last week my memory stick shocked me when it could no longer display any file. It just looked clean. I captioned it with my name, but the name disappered, now it appears as Local Disk (E:). The capacity shows 499MB and surprisingly shows 494MB used space, suggesting files are still there. When trying to save a file into it it says it cannot save to this write only disk. It also complains of it being write protected. Then I scanned it for viruses. It seems to be scanning a huge number of similar files, thus FILE000.CHK,FILE0001.CHK... FILE720.CHK. During scan it just displays the folder E:\FOUND.00.

Help .

Ona.

.chk files are pieces of files or data found during a chkdsk function. It means that the flash key became corrupt somehow, with bad sectors, etc.

You could look through each .chk file with notepad or Wordpad, and get an idea of what it was. But unfortunately, it looks like you'll need to do a complete reformat of the flash key...