Boot from USB external hard drive?

Discussion in 'MacBook' started by EricJD, Jun 11, 2009.

  1. EricJD macrumors regular

    Aug 15, 2007
    I have a unibody MacBook. Is it possible to install Mac OS X on a USB external hard drive and use that to boot?
  2. GfulDedFan macrumors 65816


    Oct 17, 2007
    Yes as long as it's formatted Mac OS Extended (Journaled) and has a GUID partition table.
  3. lilchub101 macrumors member

    May 11, 2009
    so easy I used to do this with a school mac so I could have admin rights just remember to boot from it hold option when you boot to chose the hd to boot from
  4. EricJD thread starter macrumors regular

    Aug 15, 2007
    Ah, thanks.
    Works great; I'm running OS X on my external drive at this very moment :)

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