Making a USB SuperDuper! backup drive bootable

Discussion in 'Mac Basics and Help' started by 1458279, Nov 26, 2012.

  1. 1458279 Suspended


    May 1, 2010
    I bought an IOMega 2T USB 3.0 ext drive to do a backup. Got SuperDuper! and a few hours later I have a backup. I've looked at the files and all seems to be intact.

    I did my OS upgrade SL 10.6.8 So that I can now buy ML for the next upgrade.

    I wanted a HDD backup that I can boot to whenever I want/need to.

    How to I make the USB drive bootable?

    I see nothing in Disk Utilities or in SuperDuper!
  2. Fishrrman macrumors G5


    Feb 20, 2009
    "How to I make the USB drive bootable?"

    - Shut down Mac with external drive connected (but powered on)
    - Press Mac's power-on button
    - As soon as you hear the startup sound, hold down the option key and KEEP HOLDING IT DOWN
    - In a few moments, the startup manager will appear.
    - Use the tab key or arrow keys to select the backup drive, then hit the enter key
    - The Mac should boot from the backup

    This doesn't change the selection you have already made in the "Startup Disk" preference panel. If you restart a second time, the Mac will boot back to the internal drive.

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