Help formatting external hard drive

Discussion in 'Mac Basics and Help' started by Kotnirid, Mar 24, 2009.

  1. Kotnirid macrumors newbie

    Mar 24, 2009
    I received an Acomdata 2Tb external hard drive today from Amazon and plugged it in. Time Machine popped up and I declined to link the hard drive to it. I went into Disk Utility and chose the new hard drive on the left column and went to erase. I chose Mac OS Extended. I named it and hit erase. It started going, and going..... and going... and a half an hour later I knew something was wrong. Disk Utility was not responding and I eventually had to Force Quit. Now I cannot format the hard drive. I starts and then it stops with a disk error. I tried to run the First Aid verify and repair and both stopped after a few seconds with an error. What do I do?
  2. oneEG6 macrumors member

    Dec 29, 2008
    Try partitioning it (one partition is fine) and make sure the setting for GUID is checked. (assuming your on an Intel machine.
  3. Kotnirid thread starter macrumors newbie

    Mar 24, 2009
    Thank you, thank you, thank you!!! It totally worked! Muah!
  4. yoak macrumors 65816


    Oct 4, 2004
    Oslo, Norway
    The GUID part is important. For some silly reason, default is NOT GUID. I went to the shop thinking my disk was bad, they said it was ok. I read the post here and figured out it.
    Don´t understand why GUID is not default on Intel Macs

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