Booting OSX from an external hardrive

Discussion in 'Mac Basics and Help' started by Gballa, Sep 17, 2008.

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  1. Gballa macrumors member

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    Aug 13, 2008
    #1
    Hello everyone. I am at a school where i cant even change the time without the admin password. I can easily reset it with my leopard disk, but they somehow find out and reimage it. I was wondering if I could boot Osx from my external hardrive, and basically have a entirely different computer, on the same computer. This way nothing is restricted. Thanks.
     
  2. plinden macrumors 68040

    plinden

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    Apr 8, 2004
  3. Gballa thread starter macrumors member

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    Aug 13, 2008
    #3
    thank you for all your help...lol....could u please tell me how
     
  4. Sun Baked macrumors G5

    Sun Baked

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    May 19, 2002
    #4
    Well if they were smart they enabled firmware password.

    Otherwise, if it is an Intel Mac just make sure you format the drive GUID.
     
  5. Gballa thread starter macrumors member

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    #5
    Could you give me the steps to do this please...sry i am stupid
     
  6. Sun Baked macrumors G5

    Sun Baked

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    May 19, 2002
    #6
  7. MCRunning macrumors 6502

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    Sep 8, 2008
    #7
    First you have to make a .dmg file of whatever OS X version you want to use.
    Then you have to partition the hard drive first into two parts.

    Open up Disk Utility click on the HD > Partition
    Make the first partition around 10 GB or so and the second partition whatever space is left (or unless you want to make 3 partitions or more).
    Then click options on the 10 GB HD and make it either a GUID Partition Table or an Apple Partition Map (This depends on whether or not you have an intel or power pc. )
    Once you have done that restore the OS X .dmg you previously created on the 10 GB partition

    Then restart in boot mode (hold c down I believe), select the 10 GB HD and select to install it on the second partition
     
  8. Gballa thread starter macrumors member

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    Aug 13, 2008
    #8
    ok... thanks for your help, it worked and everything, but it could be faster. I have western digital 160 passport and want maybe a firewire that could work with it or a really high speed usb cord...idk...thanks
     
  9. Les Kern macrumors 68040

    Les Kern

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    Apr 26, 2002
    Location:
    Alabama
    #9
    Curious why you'd need to modify anything on a machine you don't own. Isn't it set up to be useful? What can't you do on it that you feel you need to do? Isn't discussing hacking a violation of the terms here? I thought it was.
     
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