How to reinstall GRUB2 EFI?
Problem
After successfully updating my bios, something went wrong and I ended up with a blinking cursor on the top left corner of a black screen. No errors, no nothing. The bios now only listed a boot option in place of the usual UEFI one. I'm using a GPT partitioning scheme. I eventually found that the working solution was to properly reinstall . So, how do I do this ? PS: Actually, i succeeded to reinstall GRUB2 EFI on my own and will post my answer here as I was unable to find any complete how-to on this.
Error Output
SATA: <disc name>
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1 Fix
Fix for: How to reinstall GRUB2 EFI?
Boot your computer with a live-USB/CD in UEFI mode. I had two boot options and , the second is needed to expose the efi variables in so that don't fail later on. Booting with the first option gives me the following error: did'nt work for me. chroot into the broken system (similar to the ubuntu grub2 help but with efi specificities): Depending on your linux distribution, you now do different things. For Ubuntu/Debian: or alternatively: should the above give you a grub, but not a bootable one For…
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