can not boot from Western Digital external HD

Discussion in 'Mac Pro' started by cuestakid, Feb 5, 2007.

  1. cuestakid macrumors 68000

    Joined:
    Jun 14, 2006
    Location:
    San Fran
    #1
    I have a MyBook Pro 500 GB Tripple Interface External HD-for some reason when I hold down option during boot I do not see the drive-I used to always see it but I dont now-I think it has to do with me having to reformatt it a few days ago but I have tried everything to boot from it but no avail-I want to be able to try to boot from a backup that I made to see if it works or not-any ideas??

    thanks
     
  2. CanadaRAM macrumors G5

    CanadaRAM

    Joined:
    Oct 11, 2004
    Location:
    On the Left Coast - Victoria BC Canada
    #2
    After you reformatted the drive, did you reinstall OSX onto it?
     
  3. cuestakid thread starter macrumors 68000

    Joined:
    Jun 14, 2006
    Location:
    San Fran
    #3
    by that do you mean actually installing onto it- if so then the answer is no-so how do i do that-just boot from CD and install from there?
     
  4. Jiddick ExRex macrumors 65816

    Jiddick ExRex

    Joined:
    May 14, 2006
    Location:
    Roskilde, DK
    #4
    You obviously cannot boot from a drive that doesn't have installed an operating system.

    Go to Disk Utility --> restore and drag your macintosh HD to the source and the Mybook drive to the destination and click restore. After some time, you have created a bootable OSX image on the mybooks hard drive. It's that easy.
     

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