Thumb drives won't change formats

Discussion in 'Mac Basics and Help' started by countcop, Jun 15, 2012.

  1. countcop macrumors newbie

    Joined:
    Jun 15, 2012
    #1
    Hello, all.

    I have a couple thumb drives that I need to work with both an older Macbook Pro (circa 2009 Intel Core 2 Duo 2.4 GHz running OS 10.6.8) and PC. I don't have admin privileges on the PC so can't format on that machine.

    I know that I need to format to FAT but when I use the Erase function on Disk Utility (setting the format to MS-DOS (FAT)), it erases the drive but then reverts back to Mac OS Extended (Journaled). In other words, the formatting doesn't seem to 'stick'. I am making sure to select the top (master) sidebar entry for the drive, not the indented one (hope that makes sense).

    On one of the drives I created a partition that was FAT and that seemed to work fine on the PC but this other drive is being suborn.

    I've searched the archives but can't find this specific problem solved.

    Any help appreciated.

    ----------

    I've also tried erasing with a zero data pass. No dice.
     
  2. countcop thread starter macrumors newbie

    Joined:
    Jun 15, 2012
  3. satcomer macrumors 603

    satcomer

    Joined:
    Feb 19, 2008
    Location:
    The Finger Lakes Region
  4. countcop thread starter macrumors newbie

    Joined:
    Jun 15, 2012
    #4
    Thanks.
    The problem is that I don't have admin privileges on the PC so I can't use the format functions (it's a work PC).
    It just seems very odd that I can't do it on a Mac.
     
  5. adnbek macrumors 65816

    adnbek

    Joined:
    Oct 22, 2011
    Location:
    Montreal, Quebec
    #5
    Try under the "partition" tab instead. Perhaps under "options" there's something you need to change (guid, mbr, etc.) before it will let you format in FAT32.
     

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