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I used Bootcamp (5.0) to create a Windows 7 install USB. It successfully created the install USB but when I reboot the system and hold down the option-key to boot from the USB drive, the boot-loader doesn't give me the option of booting from USB.

I also tried recreating the install USB from another Windows 7 machine using Microsoft's own Windows 7 USB creation tool but I still don't get the option of booting from USB on my mac.
What am I doing wrong here? Any Ideas?

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2 Answers 2

Reset to default
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You need to format the USB drive to use the GUID partition type -- use the Disk Utility on your Mac.

source Apple support docs

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As far as I know, if your mac still has an optical drive, you are forced to boot Windows from a DVD (and won't be able to boot it up from the USB).

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  • Do you have anything to support this?
    – Danijel-James W
    Oct 1, 2013 at 11:25

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