Installing 10.4 to USB ?

Discussion in 'macOS' started by blackscooby, Jul 5, 2007.

  1. blackscooby macrumors 6502

    blackscooby

    Joined:
    May 12, 2005
    Location:
    Cheshire, UK
    #1
    OK I'm having a brain freeze moment !

    I used to have OSX installed on my external USB drive, however as the partition was massive I reformatted and shrunk the partition to 30Gb (ample space for a bare install).

    Boot from DVD, start installer, but it says I cannot install the the USB drive... why's this ?
    I definitely used to have OSX installed, but cannot remember how I got it there. I know I did as I used to hold down option to select MacHD or USB device...

    The demons have taken my memory away.... aggggrrrrrr

    Ta muchly

    Mark
     
  2. plinden macrumors 68040

    plinden

    Joined:
    Apr 8, 2004
    #2
    Did you format the partition to use the GUID Partition Table?
     
  3. blackscooby thread starter macrumors 6502

    blackscooby

    Joined:
    May 12, 2005
    Location:
    Cheshire, UK
  4. plinden macrumors 68040

    plinden

    Joined:
    Apr 8, 2004
    #4
    It's not just the format you need to get right - to boot an Intel Mac off any drive, you need the GUID partition table, not Apple Partition Map.
     
  5. blackscooby thread starter macrumors 6502

    blackscooby

    Joined:
    May 12, 2005
    Location:
    Cheshire, UK
    #5
    Ah right, gottcha
    http://docs.info.apple.com/article.html?artnum=303220

    I'll give that a go.
    Thanks
     

Share This Page