External Harddrive as a Dual Boot Startup Disk

Discussion in 'Mac Accessories' started by calebb0917, Apr 5, 2009.

  1. calebb0917 macrumors member

    Mar 1, 2009
    Is there any way I can boot up my external harddrive as a startup disk along with my internal harddrive?
  2. aaronw1986 macrumors 68030

    Oct 31, 2006
    Yep, you just hold option at the startup. It may have to be firewire?
  3. calebb0917 thread starter macrumors member

    Mar 1, 2009
    This would allow me to use both harddrives? I thought you could only use one by holding the option key.
  4. txnoob macrumors 6502

    Mar 12, 2009
    You cannot boot from 2 drives at the same time. Holding option allows you to choose which drive you want to choose from.

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