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I have a Dell XPS 14z which I am trying to install Linux Mint 13 on. I know this computer can boot off USB drives; I've done it before, however the option to boot off a USB has disappeared from the BIOS menu. The only options I have are CD/DVD/CD-RW Drive, Hard Drive, and Network. How do I get it back?

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The USB device has to be plugged in before you enter BIOS Setup utility to have this option available, most likely

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I have the usb plugged in though – jeffythedragonslayer Oct 1 '12 at 16:06

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