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Could somebody please help me with this? I have checked and double checked that secure boot is disable in the UEFI settings. No matter what i do, i cannot get my ubuntu live usb to be listed under the "use a device" menu when trying to boot from it. I have tried different usb drives and different programs to create the live usb. Could anyone please suggest any possible causes for this? Cheers!

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Can you tell us what method you have tried to create the USB? – BiggJJ Jun 28 '13 at 23:44

It would be interesting to know if the same live USB would boot another machine. I doubt it would. I've had bad luck with unetbootin recently - I get exactly this result.

What I've found to work is dd, a Linux/Unix disk and data copying utility. The command is

dd if=<file-you-want-to-copy.iso> of=<usb-device-you-want-to-boot-from>

For example, if I had downloaded 13.04 to ubuntu-13.04-desktop-i386.iso in my home directory, I would enter

dd if=`/ubuntu-13.04-desktop-i386.iso of=/dev/sdb
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Make Sure you are using FAT file system and check in BIOS if you have enabled boot from USB option.

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