burn osx to usb drive

Discussion in 'Mac OS X Lion (10.7)' started by satirev, Jul 20, 2011.

  1. satirev macrumors 6502

    May 23, 2010
    hey guys i have a 4gb sandisk cruzer usb thumb drive. I completely erased the drive, and then created a partition, and the partition comes out to 3.66 gb, not enough for lion. Any idea why its not allowing me to make the partition higher?

  2. MisterDisney macrumors 6502a

    Jun 20, 2010
    Just under the capacity you need. More like 3.8gb.
  3. satirev thread starter macrumors 6502

    May 23, 2010
    thanks for not answering my question and stating what i already knew...
  4. balamw Moderator


    Staff Member

    Aug 16, 2005
    New England
    It's probably due to the fact that there are two "gigabytes" in common use.

    Drives are typically sold in decimal Gigabytes while the OS reports binary Gibibytes this leads to a ~7.2% reduction in apparent size.

    see e.g. http://en.wikipedia.org/wiki/Gibibyte

    Depending on the drive, there might also be a hidden partition for other purposes, e.g. many drives have a virtual CD partition for install software...

  5. MisterDisney macrumors 6502a

    Jun 20, 2010
    Sorry, small screen.. Misread. Yeah. That's probably as big as you can get with that one. You'll want to get an 8GB stick.

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