Unable to Format/Use Transcend's 8GB Flash Drive

Discussion in 'Mac Basics and Help' started by preshit, Sep 18, 2009.

  1. macrumors newbie

    Joined:
    Sep 7, 2009
    #1
    Hey folks,

    I was recently gifted an 8gig Transcend Flash Drive by a friend. When I inserted the drive into my unibody MacBook Pro running Snow Leopard, it pops up a window that says:

    The disk you inserted was not readable by thing computer

    Initialize / Ignore / Eject

    Clicking on Initialize takes me to Disk utility and if I try to format the drive. it gives me an error that says:

    Partition failed - POSIX reports: Cannot allocate memory.

    I then take the drive to a Mac that's running Leopard, but the same thing happens there as well, except the error when formatting tells me it's an 'Input / Output error'

    On both the Macs, I've tried formatting with a GUID and MBR, but neither works. I've tried to format it as Free Space/MS-DOS format or even the native Mac OS Extended, but nothing works.

    --

    Now, before you come to the conclusion that it may be a faulty thumb drive, I need to tell you that the drive works perfectly fine on a PC. I've tried it on 3 different PCs, running XP, 7 and Ubuntu respectively. All the tree are capable of detecting, mounting the drive and read/write it just fine. I could even format the drive just fine on all three computers.

    What's more, I installed Mac Drive on a XP machine and it could format the drive as HFS+ too.

    This thing is driving me nuts for the past 12 hours and I'm out of solutions what to do.

    Any help would be really appreciated.

    Thanks

    -preshit
     
  2. macrumors regular

    Joined:
    Aug 13, 2007
    #2
    I'm having the same issue, with multiple drives.. one or two USB keys over the last couple weeks I've had to unplug/replug 2-3 times before they mount, and I have three external hard drives two of which won't mount at all (the error you outlined) and one was touchy for a week or so and now won't mount like the others, and that's as a problem as the latter is my Time machine disk.

    Help would be greatly appreciated, I'd never had these problems under 10.5 working with a ton of USB flash drives and external hard drives.
     
  3. macrumors Core

    miles01110

    Joined:
    Jul 24, 2006
    Location:
    The Ivory Tower (I'm not coming down)
    #3
    What happens if you format as NTFS or FAT on a windows machine and then plug it into your Mac?
     
  4. thread starter macrumors newbie

    Joined:
    Sep 7, 2009
    #4
    It throws up the same error message wanting me to 'Initialize' it or Eject it.
     
  5. Consultant, Sep 21, 2009
    Last edited: Jan 17, 2011

    macrumors G5

    Consultant

    Joined:
    Jun 27, 2007
  6. Guest

    Joined:
    Oct 19, 2008
    Location:
    New Zealand
    #6
    It could be that the drive needs more power - if you're using the keyboard USB ports on a desktop Mac (or external laptop keyboard), try plugging it directly into the computer's own USB ports.
     
  7. macrumors newbie

    Joined:
    Sep 26, 2009
    #7
    USB 8gig

    Hello, I've got the same problem with the same pen drive on a 10.4.11 powerbook.
     
  8. macrumors regular

    ncmason

    Joined:
    Feb 27, 2007
    #8
    I have never had problems using SanDisk USB drives. You may want to try using one of those instead.
     
  9. macrumors newbie

    Joined:
    Sep 28, 2009
    #9
    usb problems

    I am having some wonky things go on here...

    dual layer disks burn fine
    single layer dvd disks burn fine if using a small .dmg
    single layer dvd disks fail near end of burn if using a large .dmg file

    I've experienced a couple of errors while formatting two of my usb keys (128mb and a 512mb) that I want to install chameleon 2.0rc2 with the rc3 upgrade (an excellent boot loader that I prefer over using apple's bootcamp). I eventually managed to get them to format... persistence, i guess. Neither key had been used for maybe 4 or 5 months if that makes a difference.

    The reason that I mentioned the above problems, is to let you know that when I try to install chameleon on a single partition usb key (both 128mb or 512mb), the install fails right near the end.

    I am wondering if all of these problems and the ones you are having aren't an apple issue rather than a problem created on our respective ends.

    I have seen users in the osx86 community complaining of similar issues. It seems to be happening to quite a few people, regardless of whether or not they are running a Mac or a Hack.

    Does this help to perpetuate conversation?


    oldefixuser
     
  10. macrumors newbie

    Joined:
    Sep 24, 2009
    #10
    Same exact issue. In my case, I could to format it using the disk utility on a MAC OS boot disk and was able to write data to it. However, few days later it has started giving the same problem again.
     

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