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William_Jonah_Roberts_
January 10th, 2014, 07:06 AM
After installing Ubuntu 13.10, my uefi boot priority is locked and when I try to move usb devices to the top and save, I get an access denied error. My question is; is it possible to add a grub2 entry to boot from usb devices (ie live usb keys or bootable hard drives?) Without having to identify them and the vmlinuz file? (Similar to how bios would boot a bootable flagged drive...)

sudodus
January 12th, 2014, 02:02 PM
I'm not very experienced with UEFI, I've just started to learn about it (with one new laptop), but I suggest that you try to add a grub2 entry. See this link about chainloading, that might work if you chainload to a USB device which can boot in UEFI mode (for example a current Ubuntu 64-bit version (12.04.3 or 13.10)).

https://help.ubuntu.com/community/Installation/FromUSBStick#Chainloading