USB thumb drive not readable: The disk you inserted was not readable by this computer

Discussion in 'Mac Accessories' started by hakxmaster, Jun 20, 2014.

  1. hakxmaster macrumors newbie

    Joined:
    Jun 20, 2014
    Location:
    Perth, Western Australia
    #1
    My Toshiba 4GB thumb drive us popping up an error very time I insert it. The error shows:
    [​IMG]

    When I open Disk Utility, the drive is shown but none of the volumes are readable. All of the options to verify disk or formatting are greyed out. When I tried Disk Warrior, it did not read my disk at all.
     
  2. FreakinEurekan macrumors 68040

    FreakinEurekan

    Joined:
    Sep 8, 2011
    Location:
    Eureka Springs, Arkansas
    #2
    Sounds like a dead thumb drive. Try it on another computer, if same thing just toss it - you can get 16GB thumb drives for under $10.
     
  3. hakxmaster thread starter macrumors newbie

    Joined:
    Jun 20, 2014
    Location:
    Perth, Western Australia
    #3
    I've tried it on another computer. It didn't work at all. Also, I don't just want to toss it, I have some data on it that I don't want to lose.
     
  4. brentsg macrumors 68040

    Joined:
    Oct 15, 2008
  5. brand macrumors 601

    brand

    Joined:
    Oct 3, 2006
    Location:
    127.0.0.1
    #5
    I concur. A USB flash drive should never be a location to store data that you do not want to loose.
     
  6. Fishrrman macrumors G4

    Joined:
    Feb 20, 2009
    #6
    To the OP:

    You didn't tell us -how- the flashdrive is formatted. That's important information.

    IF it was formatted to HFS+ (Mac format), and if nothing else works, you could do this:
    1. Reinitialize it in Disk Utility. Yes, you read that right. Just do a quick reinitialization. Do not, repeat DO NOT, choose to "zero out" the data.

    2. Use a data recovery app like DataRescue3 (or Disk Drill, or Stellar Phoenix Data Recovery) to do a "deep scan" of the newly-initialized drive.

    3. Save the recovered files somewhere else.

    Why this can work:
    When you initialize the drive, all you do is replace the old (corrupted) directory with a fresh (and "empty") one. The old data is STILL OUT THERE on the drive. The data recovery app will "work around" the directory, and "go right to the sectors" of the drive, scavenge around, and re-assemble what it finds onto a scratch disk.

    If this works, you WILL lose file names and folder hierarchies. This is par for the course with data recovery.

    AGAIN -- this is a "last resort", but it worked for me (with a corrupted partition on an HDD) when nothing else would.

    ALSO -- the above procedure can work IF the drive is HFS+. If it was "cross-platform" formatted ("fat"?) I have no idea whether this can work or not on a Mac. It -might- work if you have a PC on which you can access the drive...
     
  7. hakxmaster thread starter macrumors newbie

    Joined:
    Jun 20, 2014
    Location:
    Perth, Western Australia
    #7
    My drive is formatted with FAT and the partition table is MBR.
     

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