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Today I was doing a apt-get dist-upgrade, and a popup showed up, "Do you want to follow without installing grub?" or something like that, and I wrongly pressed YES, So, I have done a apt-get install grub and grub-install /dev/sda, and I used grub-emu to test if it worked, but... 

error: no such device: a9ef93bc-2be5-465b-86b5-9f631349c3be.
error: can't find command 'linux'.    
error: can't find command 'initrd'.
Press any key to continue...

BootInfo (From boot-repair): http://paste2.org/AUWMhpOj

I tried boot-repair, but it froze just after installing grub using apt-get.

I haven't rebooted yet, I fear the worst... I need to mention my root consists of 2 disks with RAID (10gb each).

Braiam
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Agustín Covarrubias
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  • http://ubuntuforums.org/showthread.php?t=2216265 – Agustín Covarrubias Dec 19 '15 at 21:55
  • The most useful links I can come up with are these: http://askubuntu.com/q/43036/40581 http://askubuntu.com/q/88384/40581 Remember to use the md set where it reads sda, and also remember to boot the live media correctly, some parts in boot-info say you have UEFI some that you have MBR. You would have to install mdadm in the live system and GRUB EFI (grub-efi-amd64-bin). As you almost found out: emu does not understand your setup and doesn't find the modules on the drive. Good luck. (I don't have time and experience to setup mdadm in a VM currently.) – LiveWireBT Dec 20 '15 at 16:24

1 Answers1

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Ok, so there was no actual problem in GRUB, the warnings seemingly appeared because grub-emu was trying to check GRUB's entire start routine but it wasn't able to find a real OS to start.

"Don't panic." — Douglas Adams

Agustín Covarrubias
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