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Thread: Make iMac boot disk on USB flash drive

  1. #1


    Member Since
    Dec 22, 2010
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    Make iMac boot disk on USB flash drive
    Two things:

    Can I simply do an OS install to a USB flash drive from disks that came with my new iMac and thereby create an emergency boot source?

    How big a flash drive do I need to get to also load Disk Warrior or TechTools as well as the OS onto the flash drive?

    Actually, a third thing:

    Where could I find out this information for myself, i.e., does "it" say somewhere OS takes X amt of space, Disk Warrier, X amt of space, etc.?

    Thank you all for reading and your gentle, considerate responses.

  2. #2

    Buzzard2010's Avatar
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    Welcome to mac-Forums

    You can do but I would read up about it first. You will be looking at around 8-12gb usb thumb drive stick for the job.
    Here is a link for a nice little tutorial about it:
    Install & Boot OS X Leopard from a USB Flash Drive | Maciverse

    Hope this helps

    - Simon

    If you have been helped, don't forget to use the Reputation system at the top right of their post.
    May 2011
    Nominated: March 2011 & April 2011

  3. #3

    bobtomay's Avatar
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    Personally, I would recommend an external drive instead. Then use either SuperDuper! (cheap) or CarbonCopyCloner (free) to create a bootable backup.

    Three problems solved in one:
    a backup
    a bootable backup to continue working when the internal drive dies until you have the time to get it replaced
    a bootable backup with all your tools to troubleshoot and/or restore the internal drive in case of a faulty update, app install, etc.

    16 GB flash drive: $20-$40
    500 GB external drive: $60-$70
    1 TB external: <$100
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  4. #4

    JUKE179r's Avatar
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    Definitely go with the external drive like bobtomay noted.
    I use CarbonCopyCloner on a 64GB thumb drive as a backup and you can boot from it. Trouble is, the thumb drive freezes up at times when using some apps.
    MBP 11,3 | Logic Pro X | Ableton Live 9 | Traktor Pro 2 | AKAI MPC2000XL, X7000, MPK-49 | Roland MV-8000, SP-808, TR-707, TR-808 & TR-909 | Ensoniq ASR-10 | x0xb0x #911 & Willzyx | Denon DN-MC6000 | (3) Technics SL-1200MK1 | 4000+ vinyl records

  5. #5

    bobtomay's Avatar
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    If you do go with an external, FW connectivity can be worth the additional money if you are moving large amounts of data. For use only as a backup/troubleshooting device, USB will be fine.
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

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