12 Replies Latest reply: Mar 12, 2012 4:28 AM by petermac87
gretschdrummer Level 1 Level 1 (0 points)

So my Mac froze for some reason, while my Kingston thumb/flash drive was in. I tried to eject it, but I could only force eject (which it said may cause issues). After that, whenever I put the thumb drive in, it said something like the drive won't work and I had to copy the files to my desktop. When I go into disk utility and click repair disk, it says this:  "Disk Utility stopped repairing “UNTITLED 1”: Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files."

 

I can't erase the thumbdrive, because it says I need a source, which I don't know what that means.

 

Can anybody help? The files are useless now as I have transferred them to a CD, so I'm fine with erasing the whole thing. And yes, I know I can get a new on at any store for cheap, but I'd like to know if this can be repaired. Thanks.


Mac mini, Mac OS X (10.6.5)
  • fane_j Level 4 Level 4 (3,660 points)

    gretschdrummer wrote:

     

    I can't erase the thumbdrive, because it says I need a source

    In Disk Utility, select the thumb drive, rather than any volume on it. Go to Erase and reformat it. If it doesn't work, post here the exact error message.

  • gretschdrummer Level 1 Level 1 (0 points)

    Two error messages showed up:

     

    1 (with a red !): MAC OS X can't repair the disk "UNTITLED 1." Disk Utility can’t repair this disk. Back up as many of your files as possible, reformat the disk, and restore your backed-up files.

     

    2: Disk Erase failed with the error:

    POSIX reports: The operation couldn’t be completed. Cannot allocate memory

  • fane_j Level 4 Level 4 (3,660 points)

    gretschdrummer wrote:

     

    2: Disk Erase failed with the error:

    POSIX reports: The operation couldn’t be completed. Cannot allocate memory

    Try this

     

    <http://reviews.cnet.com/8301-13727_7-10430235-263.html>

     

    (Make sure you get the correct disk identifier -- it cannot be disk0.)

  • gretschdrummer Level 1 Level 1 (0 points)

    tried it, and terminal says this: Error: -10000: Could not unmount disk

     

    when i try to erase the drive, disk utility says this: Volume Erase failed with the error: File system formatter failed

  • fane_j Level 4 Level 4 (3,660 points)

    In Disk Utility, unmount any volume on the thumb drive. Then try again diskutil in Terminal. If it doesn't work, copy the command and the result from Terminal and post it here.

  • HACKINT0SH Level 5 Level 5 (5,755 points)

    You may want to insert the Mac OS X DVD in the drive, and boot from that, then select the Disc Utility option and then see if you can format the drive from there.

     

    Normally you shouldn't have to do that, but we're trying to eliminate all kinds of odd possibilities here.

  • noondaywitch Level 6 Level 6 (8,130 points)

    You haven't mentioned how the thumb drive was formatted to begin with; is it GUID partition map and Mac OS Extended (Journalled), or is it FAT 32 with MBR partition map?

     

    If it's the latter, DU can't repair it, but should be able to format it. However, the forced ejection may have damaged the file system to prevent that.

    If it's FAT32, re-format it on a PC and try again on the Mac.

     

    If it's Mac formatted, you could try erasing and reformatting on another Mac (or as Hackintosh says, from the DVD), but if that doesn't work, try the PC route; reformat to FAT32 on a PC (if the PC will recognise it - thay don't always), then go back to the Mac, repartition and format.

     

    If that fails, it's recycling fodder.

  • fane_j Level 4 Level 4 (3,660 points)

    noondaywitch wrote:

     

    You haven't mentioned how the thumb drive was formatted to begin with

    I don't see how the issue the OP ran into has anything to do with the original format. It's probably a complex interaction of several factors -- there's a long-running thread somewhere in the forum on the same topic.

  • gretschdrummer Level 1 Level 1 (0 points)

    I tried that, and this is what I got:

     

    Started erase on disk2s1 UNTITLED 1

    Unmounting disk

    Error: -9986: Could not modify partition map

     

    For reference, the thumb drive is FAT32. I remember I had to change the format for it to work on my PS3.

  • HACKINT0SH Level 5 Level 5 (5,755 points)

    Ok, try using the drive in another port.

     

    Also, do you have another thumb drive around, just to test this isn't something that's restricted to the thumb-drive itself.

  • fane_j Level 4 Level 4 (3,660 points)

    gretschdrummer wrote:

     

    I tried that

    It's a doozie. I don't think there is a software solution. Changing USB ports might work, but I'd try a self-powered port. I'd also try formatting it with a different device -- a PC, the PS3, etc.

  • petermac87 Level 5 Level 5 (5,190 points)

    gretschdrummer wrote:

     

    I tried that, and this is what I got:

     

    Started erase on disk2s1 UNTITLED 1

    Unmounting disk

    Error: -9986: Could not modify partition map

     

    For reference, the thumb drive is FAT32. I remember I had to change the format for it to work on my PS3.

    Some simply have a short life span. I have been through a few over the years that simply died. Mostly cheap ones. Have some Sandisks still running along that are just as old but never a problem. Hit and miss sometimes and after they have played up like yours they can never really be trusted. Ditch it and buy a better quality one. IMHO.

     

    Pete