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  • aRKay Level 2 Level 2 (205 points)
    Anybody out there have any other tricks up their sleeve?


    I suggest you read my posting above dated Jun 29, 2010 4:03 AM. I had all of the same
    issues and they were ALL solved when I followed Apple's lead and got rid the Seagate and
    Western Digital drives and changed to Hitachi. Since changing over to Hitachi drives, I have
    had no issues.

    Message was edited by: aRKay
  • G8rDuc Level 1 Level 1 (15 points)
    That's not a fix, aRKay. Why should I have to get rid of a new hard drive and buy another one?

    aRKay wrote:
    Anybody out there have any other tricks up their sleeve?


    I suggest you read my posting above dated Jun 29, 2010 4:03 AM. I had all of the same
    issues and they were ALL solved when I followed Apple's lead and got rid the Seagate and
    Western Digital drives and changed to Hitachi. Since changing over to Hitachi drives, I have
    had no issues.

    Message was edited by: aRKay
  • aRKay Level 2 Level 2 (205 points)
    That's not a fix, aRKay. Why should I have to get rid of a new hard drive and buy another one


    Because both Seagate and Western Digital drive were giving me trouble. I had to replace one Western
    Digital 500 GB Blue SATA three times within 60 days. When the third drive failed, I paid extra to
    to get an Hitachi and have not had any problems.
  • The hatter Level 9 Level 9 (60,510 points)
    Maybe you should try using WD's Lifeguard and doing a full Extended Test and full format and initialize (in Windows) before using, and when you run into bad sectors or drive "failure."
  • aRKay Level 2 Level 2 (205 points)
    I don't do Window of any kind. FYI, I let 2d WD 500 GB (Blue) drive run all
    night on a Kangaroo system over night and it cleared all sectors. It ran for
    a few days then started given the same old errors. Personal opinion only -
    I will never buy another WD drive for use with a Mac.
  • GerryML Level 1 Level 1 (0 points)
    3 months after my new iMac came, the internal WD 500GB HD failed and was replaced early last year through warranty with a Seagate model ST3500630AS Q. So far it's been good.

    Anyway, I brought my 1TB Seagate FreeAgent Desk to my brothers house just few hours ago and tried it in his mac. The results were the same. Initially, we got a message that the hard drive was not recognized. One of the options available with the message was "Initialize..." and so I clicked and the Disk Utility came up. I tried to erase and reformat the whole disk and got the same POSIX message "Cannot allocate memory."

    I will call Seagate next and post an update when available. Thanks.
  • GerryML Level 1 Level 1 (0 points)
    Got some support from Seagate and had me to download the Seagate Disk Wizard to my PC and run it there to initialize the drive by using Add Disk. This worked only to a point where my iMac was able to "erase/format" the drive back to GUID. The TM recognized the drive and I was able to run TM for 10 minutes then I got a TM Error with not much details. Another TM Error says "Unable to create backup folder." Tried this three times and just ended up in the same hole labeled POSIX!

    After a few email exchanges with Seagate support, I was finally advised to call 1800-Seagate and talk to a real person. This person looked at all my emails and screen captures and just decided a drive failure may be the cause and forwarded my call to the warranty department for a replacement since it's still under warranty.

    After all that, POSIX problem has really not been solved.

    Just waiting now for my replacement drive and hoping I will not get that same problem again. If not at least for awhile. Sigh!
  • aRKay Level 2 Level 2 (205 points)
    Just waiting now for my replacement drive and hoping I will not get that
    same problem again. If not at least for awhile. Sigh!


    Been there, done that and it will show with a refurbished label and 90 day
    warranty. Mine did not work any better than the first one went to the real
    trash can. I now only use Hitachi drives and have not had a HD issue since
    changing. Good luck!
  • socokid Level 4 Level 4 (3,140 points)
    r
  • Daniel Oskarsson Level 1 Level 1 (0 points)
    Just wanted to add info that I as well did hit this problem an hour ago after trying to go from Apple Partitioning Map to GUID Partitioning Table on an Iomega MiniMax 250 GB. I have read through the entire thread and tried all but using Mac OS X < Leopard (don't have it), Windows (don't have it) and Firewire (it's on the disk, but not my computer).

    It definitely seems like a bug when combining Mac OS X > 10.5 + USB + Some External Drive Closures.
  • marant1789 Level 1 Level 1 (0 points)
    Got this to work. Use Disk Utility to format each drive separately to an MSDOS FAT, then use the RAID tab to set up RAID, as usual, dragging and creating.
  • miragelambo Level 1 Level 1 (0 points)
    from seagate site:
    http://seagate.custkb.com/seagate/crm/selfservice/search.jsp?DocId=207851&NewLan g=en&Hilite=PartitioningUSB+hard+drives+that+fail+in+Disk+Utility+with+%26%2339%3BPOSIX%26%2339%3Berror

    Special instructions if erase fails on Leopard / Snow Leopard.

    Leopard (Mac OS X - 10.5.x) and Snow Leopard (Mac OS X - 10.6.x) seem to be currently having problems reformatting external drives. This is a common issue on Leopard/Snow Leopardthat is seen on most brands of drives.
    Note: This is not a problem with the external drive itself. Rather, it is an issue with the Disk Utility included in Leopard/Snow Leopard.

    Suggestions: If partitioning/formatting the drive in Disk Utility fails, there are three options:

    Ensure that any/all installer (DMG) files are dismounted before trying to prepare an external drive. Simply drag these files to the Trash to proceed.

    Partition the drive using the OS install CD.

    Insert your Operating System install DVD into the CD/DVD drive.

    Restart your Mac.

    Hold down the Option key while the Mac is rebooting.

    Choose the "OS X install Disk" option.

    Choose your preferred language.

    Choose "Utilities > Disk Utility" from the top-menu.

    Follow partition and formatting instructions from step 1-C.

    If the Disk Utility Partition option fails, it may be necessary to move the external drive to a Windows system to repartition and reformat it. Click here to launch a video showing how to prepare an external drive using Windows Vista, or here for step-by-step instructions for Windows XP, or here for step-by-step instructions for Vista.

    Additional Information: Do not try to use the reformatting tutorial script that comes on the OneTouch 4 drives, as this script was designed for Mac OS X 10.4 (Tiger) and will not work properly on Leopard.

    Note: Viewing of Video Tutorials Requires the following:

    A screen resolution of at least 800x600

    Javascript Enabled in your Browser

    Adobe (Macromedia) Flash Player be installed on your system
  • miragelambo Level 1 Level 1 (0 points)
    another fix:
    http://stx.lithium.com/t5/FreeAgent-Products/osx-is-unable-to-reformat-750GB-dri ve-in-anything-but-fat-32-is/m-p/4112#M1070

    Super Easy Fix... I couldnt get Disc Utilty to reformat...
    I had to format it for Time Machine first and then use Disc Utility to reformat to Mac OS (extended journaled)

    Here's the steps:

    -Plug in drive...

    -Unplug your current Time Machine Hard Drive (If you use Time Machine)

    -Open System Prefs. and go to Time Machine

    -Click on the "Change Disk" option

    -Select your Seagate drive

    -It will say that a reformat is required and tell you that all the data on the drive will be erased. Say OK

    -When it starts backing up Time Machine click the X next to the progress bar to stop it. It has already formated the disc for Time Machine by that point.

    -Then open the Disc Utility and select the Segate Disk (just formated for Time Machine) and go to the erase tab

    -Choose the Mac OS (Extended Journaled) and name your disc

    -Click erase... It will format the disc with no problems...

    Done
  • GerryML Level 1 Level 1 (0 points)
    I have gotten an HD replacement from Seagate today and so far, the backup is going well with TM. I am taking a little bit of a precaution of not partitioning the 1TB disk and dedicating it only for TM. I'm planning on just buying another 2TB for my media. The question is what brand? I know the Hitachi was strongly suggested.

    miragelambo, I believe I have tried the solutions you posted but may have just some slight variations. If this happens again I will try it to the step. Thanks for your posts.
  • miragelambo Level 1 Level 1 (0 points)
    Ok folks, i i got my drive back, this was how.

    I used my PPC mac inserted a 10.4.6 install/boot disc, boot as if doing OS install
    Go to utilities top menu choose Terminal
    Type in: diskutil list
    (this will list all your drives mounted or not)
    note the disk number of the one you need to recover
    Then type in: diskutil eraseDisk HFS+ UntitledHFS+ disk1
    (where disk1 is your disk number)
    Press return..

    Reboot back to normal OS you should see your drive mounted and erased
    (hopefully then you can recover any files that were on it with filesalvage/data rescue3)

    Message was edited by: miragelambo
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