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For no apparent or obvious reason, the files of my usb-flashdisk (32gb) are not visible/gone.

The drive is located, I get an 'autoplay' dialogue and all the folders are visible, but all the files (photo's, documents, .rar's, everything) is not visible (or gone...) The folders show no contents, and the properties also show 0 bytes. The drive itself, on the other hand, shows that roughly half of the space is used.

I tried several usb ports and different pc's, but there is no difference.

What is the next step?

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By "maps" do you mean directories/folders? –  Karan Dec 6 '12 at 14:44
whoops... edited –  Joris Dec 6 '12 at 15:24

2 Answers 2

  1. click start>>run>>type in "cmd"
  2. type the location of your flash drive.. e.g. "d:", "e:", "f:", etc..
  3. type "dir /ah" *you will now see the files/folders with hidden attributes
  4. type "attrib [name of file/folder] -r -a -s -h" *if you're going to unhide files, you should type the whole name plus the extension (format).. example "attrib party.jpg -r -a -s -h" **if you have folders with 6 characters and above, type the first 6 characters then "~1".. example for folder named "birthday" "attrib birthd~1 -r -a -s -h"
  5. you should repeatedly type dir /ah after unhiding some files/folders so you'll know if they're now working or not..
  6. now check you flash drive.. it should be there..

heres another possible fix

  • On the view tab CHECK "show hidden files and folders".
  • UNCHECK "Hide protected operating system files".

You will see your missing folders/files which were hidden by the virus. navigate through your these folders and just copy the files in them to a new location.

If neither of those work try this data recovery tool

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I get a "file not found". Also when I'm in command prompt navigated to a specific folder. –  Joris Dec 6 '12 at 14:27
nope, the procedure after your edit (which I already tried) is also no solution... I hope this does not mean I have lost all content... –  Joris Dec 6 '12 at 14:30
If you cant find your data in either of those ways its very possible the flashdrive corrupted. I will edit with a link for a data recovery tool –  MalwareManiac Dec 6 '12 at 14:35
the tool looks good, and I'm sure it has done his job well, but it dit not return any files. at this point I'm sure the files are gone somehow. thanks for the tips though –  Joris Dec 13 '12 at 15:05

Download and install Flobo USB Drive Repair tool. Select usb flash drive and press repair. You will have your usb data. However, in case there is a virus still active, you need to desinfect first the computer running recovery .

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protected by Community May 29 at 13:47

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