Boot MBA from USbB drive

Discussion in 'MacBook Air' started by meryde, Mar 16, 2008.

  1. meryde macrumors newbie

    Mar 14, 2008
    can the MBA boot from the external USB drive, to run programs like Disk Warrior, or to boot from a backup drive?
  2. izibo macrumors 6502

    Oct 6, 2004
    Yes. I just did this Friday. I was exchanging my MacBook Air, and cloned the HD to an external USB. I got the new one, booted off the external HD, and cloned it back to the internal drive.

    Worked just as you would expect (hold down option, select your boot device, and done).
  3. hephem macrumors member

    Jan 9, 2008
    Hi to all,

    This might be a stupid question, but anyway, here I go:
    A USB dongle has flash memory which could mean it is actualy faster than a HD. Could we install OSX in the USB dongle and therefor make the MBA boot from it?

    Would it actualy worth?

    Thanks for your answers.

  4. iToaster macrumors 68000


    May 3, 2007
    In front of my MacBook Pro
    Yes, it is possible if the drive was large enough, however usb's transfer rate is not desirable for booting. The 4200 rpm 1.8" HD inside it would be faster for booting than any usb device.

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