Results 1 to 8 of 8
  1. #1

    epb's Avatar
    Member Since
    Feb 20, 2007
    Location
    Denmark
    Posts
    24
    Specs:
    MacBook Pro, 2,4 GHz Intel Core i5, 4 GB 1066 Mhz DDR3 RAM, OS X 10.8.2
    Question Booting up and holding down 'option'
    I learned that you can hold down the 'option'-key when powering up to select which drive you want to boot from if you for example have a CD in the CD-drive that contains an operating system and you want to boot from that. I'm not sure i'm posting this question in the right forum as this hasn't got anything to do with BootCamp or Parallels, but here goes:

    Is it possible to use this method to boot up from an usb HD? So, if I've got another OS (Linux or Windows or whatever) on an usb HD I just plug in the external HD and hold down the 'option' key on start-up to choose this drive Anyone familiar with this?

  2. #2

    RiDE's Avatar
    Member Since
    Sep 13, 2006
    Location
    Colorado
    Posts
    3,570
    Specs:
    Mac's
    Yes it's possible. It's one of those "at your own risk", but possible none-the-less.

    Check these out.

    http://www.mac-forums.com/forums/sho...=bootable+ipod

    http://www.mac-forums.com/forums/sho...91&postcount=2

  3. #3

    epb's Avatar
    Member Since
    Feb 20, 2007
    Location
    Denmark
    Posts
    24
    Specs:
    MacBook Pro, 2,4 GHz Intel Core i5, 4 GB 1066 Mhz DDR3 RAM, OS X 10.8.2
    Quote Originally Posted by RIDE View Post
    Yes it's possible. It's one of those "at your own risk", but possible none-the-less.

    Check these out.

    http://www.mac-forums.com/forums/sho...=bootable+ipod

    http://www.mac-forums.com/forums/sho...=bootable+ipod
    Ok thanks! But how do you mean "at your own risk"? Is it risky if I've got an empty external HD?

  4. #4

    RiDE's Avatar
    Member Since
    Sep 13, 2006
    Location
    Colorado
    Posts
    3,570
    Specs:
    Mac's
    I say that because the Ipod was not made to be a full-time drive for running an OS... The life-cycle on an iPod HD is rated at around 20,000 hours... The HD in your MacBook is rated at around 750,000 hours. The heat generated by running an OS could damage an ipod. I have also heard of someone getting Gray Screen/Static on their Macs, and having to boot from the install discs to get back to normal.

    My GUESS is that if you boot from it every now and then, your not going to have any problem.

    The above is just a disclaimer. Don't get me wrong... I plan on doing it, just haven't got around to it yet. The "at your own risk" should be applied anytime you are using something in a way that it was not meant to be used.

  5. #5

    epb's Avatar
    Member Since
    Feb 20, 2007
    Location
    Denmark
    Posts
    24
    Specs:
    MacBook Pro, 2,4 GHz Intel Core i5, 4 GB 1066 Mhz DDR3 RAM, OS X 10.8.2
    Ok I plan on using a 'normal' external HD (not an Ipod) so perhaps the external HD will be a bit more 'stable' in this matter...

  6. #6

    RiDE's Avatar
    Member Since
    Sep 13, 2006
    Location
    Colorado
    Posts
    3,570
    Specs:
    Mac's
    It will be PERFECT!

  7. #7

    twdawson's Avatar
    Member Since
    Feb 08, 2006
    Location
    Newcastle upon Tyne, England
    Posts
    124
    Specs:
    Intel Mac Mini with LG Flatron 20" widescreen LCD
    If memory serves me right it has to be a firewire drive, because you cant boot from a usb one.

  8. #8

    RiDE's Avatar
    Member Since
    Sep 13, 2006
    Location
    Colorado
    Posts
    3,570
    Specs:
    Mac's
    Intel machines can boot from USB, but PPC's cannot.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Mac not reading USB during boot (while holding alt/option)
    By Penguinator in forum OS X - Operating System
    Replies: 1
    Last Post: 07-10-2013, 11:33 AM
  2. Can't see option menu when booting from startup disk
    By salanderisms in forum OS X - Operating System
    Replies: 10
    Last Post: 08-16-2012, 05:06 AM
  3. Can I repair disk by holding "Option" instead of "C"
    By Mac Noobster in forum OS X - Operating System
    Replies: 5
    Last Post: 12-14-2011, 07:20 PM
  4. Trackpad holding
    By mobbybox in forum Apple Notebooks
    Replies: 2
    Last Post: 08-15-2010, 11:53 PM
  5. Continuously reboots while holding C or Option
    By dajinn in forum Apple Desktops
    Replies: 2
    Last Post: 05-31-2009, 01:58 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •