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My GNU/Linux Live-medium Won't Boot Under UEFI?


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#1 Guest_hollowface_*

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Posted 26 November 2015 - 03:36 PM

My GNU/Linux Live-medium Won't Boot Under UEFI?


Guide Overview

This basic set-of-tips applies to a situation where you are trying to install a GNU/Linux operating system, but when you attempt to boot the installation medium your boot process skips past it, despite you having selected the appropriate boot device. This isn't a step by step how-to-check tutorial, it's a list of things to check. How exactly you do so depends on your computer, operating system, and the tools you're using.

Tools Needed
  • N/A
Instructions

CD/DVD
  • If your motherboard's UEFI supports Secure Boot, you'll likely need to turn Secure Boot off, because many distros aren't signed, and therefore won't be permitted to boot if Secure Boot is on.
  • The DVD/CD may not have burned correctly. Try burning another disc, or if it's a rewritable disc, try reburning it.
  • If you downloaded an ISO from the internet, it's possible the ISO may not have downloaded successfully. You should hash the ISO and compare the outputted checksum to the checksum provided on the download site (not all sites provide checksums though). If they match, your ISO should be good. If they don't match, your ISO is corrupt or incomplete.
Flashdrive
  • If your motherboard's UEFI supports Secure Boot, you'll likely need to turn Secure Boot off, because many distros aren't signed, and therefore won't be permitted to boot if Secure Boot is on.
  • Not all flashdrive creators support UEFI, make sure you used one that does.
  • The flashdrive may not be bootable. For example some USB2.0 flashdrives won't boot in a USB3.0 port. Try a different flashdrive.
  • The flashdrive may not have been created correctly. Clear it, and try recreating it.
  • If you downloaded an ISO from the internet, it's possible the ISO may not have downloaded successfully. You should hash the ISO and compare the outputted checksum to the checksum provided on the download site (not all sites provide checksums though). If they match, your ISO should be good. If they don't match, your ISO is corrupt or incomplete.


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#2 Rocky Bennett

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Posted 27 November 2015 - 09:15 AM

Thank this fixed all my problems.


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