Have you successfully installed window 8 onto an external USB 3.0 drive?

Discussion in 'Windows, Linux & Others on the Mac' started by tmanto02, Feb 26, 2013.

  1. tmanto02 macrumors 65816

    tmanto02

    Joined:
    Jun 5, 2011
    Location:
    Australia
    #1
    There is a comprehensive guide for Thunderbolt drives and at least one person reporting that they successfully installed windows 8 onto a usb drive and run on a mac, however I can find very little info on this - have any of you achieved this? :)
     
  2. murphychris macrumors 6502a

    Joined:
    Mar 19, 2012
    #2
    It's firmware specific. At least 2008 and older Macs have a CSM-BIOS that doesn't support USB booting. Newer Macs have a CSM-BIOS that apparently does, or it wouldn't be possible to boot from a USB stick as an installation source. But I don't know how good Windows is at installing onto a USB destination. Making Windows transportable is not a design goal of Windows, in fact it really dislikes being moved around especially to different CPU families than what was used for the original installation.
     
  3. tmanto02 thread starter macrumors 65816

    tmanto02

    Joined:
    Jun 5, 2011
    Location:
    Australia
    #3
    Yeah the problem so far has been on the windows end. The traditional install method does not support usb drives. There is a thunderbolt work-around but not a USB one from what I can find.
     
  4. murphychris macrumors 6502a

    Joined:
    Mar 19, 2012
    #4
    It requires explicit firmware support, as well as explicit OS support. I can USB boot linux on my 2008 Macbook Pro in EFI mode, but it fails in CSM-BIOS mode, the USB bus simply vanishes (or is reset right in the middle of early boot, it's unclear which).
     
  5. dukebound85 macrumors P6

    dukebound85

    Joined:
    Jul 17, 2005
    Location:
    5045 feet above sea level
    #5
    I have a 2012 cmbp

    Can I install either windows 7 or 8 from an external usb 2 or 3.0 drive?

    Thanks
     

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