i GOT 8gb pen drive. used space 5.xgb, FREE space 2.xgb (this info shown when click property).yes, it correct.BUT my today problem when i put thumb drive into usb drive, nothing files/document shown on my thumb drive. but, if click property...it not change anything about total used space and total free space...still used space is 5.xgb and free space 2.xgb.i dont use any folder lock or any softwore for my thumb drive. really scare to format this thumb drive coz i surely think...my important folder/document still in there. please help...really appreciated. tq  [Email REMOVED]

tqI removed your email to prevent SPAM and because we'd like to keep everything on the forum.

Have you tried accessing your USB Flash Drive on different computers?ok.thanks.
already do ...same problem. already run antivirus..nothing virus foundTry this.

*  Go to Start --> All Programs --> Accessories --> Notepad
*  WITHOUT typing anything into Notepad, go to File --> Save as --> autorun.inf.
*  Save it to the desktop.
*  Now copy it from the desktop to the root of your USB flash drive.

Is there any message telling you to overwrite anything?done...then, appear error message "file already exist.specify another file name (but no such exist that file there)Was this pen drive from eBay ? ?NOPE..self buy at pc shop. kingston DT101How is it showing up in Disk Management ? ?

I'd return it for a replacement.