I was recently trying to copy some folders onto a Sandisk 8GB cruzer stick, the machine i was using has XP and the sandisk stick was pre-formatted, seem to have had some problems with this stick before,
So im using explorer to do a 'send to' of a complete folder to the cruzer drive, initially you see the window showing copying files (these are all just .jpg picture files on the machines hard drive copied direct from a camera via its SD card), then halfway through i get a message 'P1050432 cannot copy specified resource no longer available' this is one of the .JPG files.
I then try to see whats on the USB drive, and its totally blank, i try looking in proerties and it shows me 0 bytes free 0 bytes used, which is pretty odd.
I try plugging the USB drive into a Vista machine, it recognises it but makes a suggestion about checking it for errors, etc which i select (with the fix them option), and then it appears to be able to show the folders that the XP machine doesnt see any of. If i put the 8G cruzer stick back into the XP machine at this point i was seeing nothing on it.
So i tried using another USB stick (this one a 1GB) on the XP machine, copied the same folder over and also got an error message while i was doing it) and similar problem when looking at properties as it showed the 0used/0free situation. Also tried this stick on the vista machine and after the prompt to repair it, the data appeared to be on there OK, however although alll of the thumbnails display fine, several of them when you open them to view/see fullsize show corruption.
If i check the same picture files on the original XP machine, they view fine at fullsize, so i can only conclude they got corrupted while copying over.
Did some more investigation, and it now seems the Cruzer 8G has contents of what it did a long time before erased everything on it and tried copying the problem folders onto it.
The 8G stick shows as FAT32 format, and the 1G one just as FAT.
Ive tried using the 'error checking' in properties/tools for all of these drives and nothing is reported.
Are there any other utilities i can use to test the USB drives or fully re-format them incase the problem is something screwed in the FAT filing system ? Is the problem to do with the machine im copying from or the USB drives or both?