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How do I install Ubuntu to a USB key?

I want to know if it is possible to install and run Ubuntu completely off a flash drive without using my computers hard drive. I want to be able to plug in a USB and boot Ubuntu off it. I can't get passed the install screen, and I'm using version 11.10. If this can be done, please help me.

marked as duplicate by RobotHumans, Jorge Castro, John S Gruber, RolandiXor, jokerdino Sep 21 '12 at 10:06

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Yes, you can do this. Here's how:


  • that is NOT the same thing as running ubuntu completely off a usb device. more elaboration is needed. – tarabyte Jul 16 '14 at 21:57

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