[Boot-Repair] Graphical tool to repair the PC boot in one click

[SuperFreak]

I ran Boot Repair because I was getting an annoying white bar accross screen when I booted. Used the recommended repair. Now computer will not boot get the following message on boot up

Error: Invalid Arch Independent ELF Magic   Grub> Rescue

Boot Repair Summary is here http://paste.ubuntu.com/6276785/

I think Grub needs to be updated or repaired but I don't know how to proceed

[oldfred]

@SuperFreak
The invalid arch is usually different versions of grub. It may be in your case you tried booting from MBR in BIOS mode as it looks like you have that. But you have a UEFI system and need to consistently boot hard drive(s) in UEFI mode. Unless you install completely another install on another drive in BIOS mode should you ever boot in BIOS mode.

Your fstab shows the mounting of the efi boot partition, so that tells me you have a UEFI boot even though you have grub in MBR and a bios_grub partition. It then depends on which version of grub you last installed manually or with Boot-Repair. You use grub-efi for UEFI booting and grub-pc for BIOS booting and grub-efi will add the mount of the efi partition in fstab, so on updates it will update the entries in the efi partition.

I see you have one large video partition in sdc1 of 4TB. While videos may be the exception that is ok, I normally do not suggest extremely large partitions that we now can have just because drives have become that large. While drives will fail, more often we see corruption issues where a power failure or abnormal shutdown needs fsck. But sometimes that does not work or other tools are required. If smaller partition then repairs are quicker or only half of data may need to be restored from that backup.
So best to have good backups both for drive failure or corruption issues.

[SuperFreak]

OK I tried Boot repair again with EFi enabled I believe (see screenshot). My new pastebin summary is here http://paste.ubuntu.com/6277197/
I will try rebooting and see what happens

[SuperFreak]

On reboot I get the same Grub rescue> message
Is there a setting in Boot repair I need to tick off to make this work?

[oldfred]

It looks like you may want to change your default boot order in UEFI. Your want 0000 or ubuntu to be first.

BootOrder: 0004,0002,0003,0000,0005,0001
Boot0000* ubuntu HD(1,800,7d000,5c43126f-d515-4afa-80ff-1129fa47e12a)File(EFIubuntugrubx64.efi)

[SuperFreak]

I believe that is the boot order I am using (see attachment)> I think perhaps that Boot Repair changed something in my computer that has caused boot to Ubuntu to fail

[SuperFreak]

I believe that is the boot order I am using (see attachment)> I think perhaps that Boot Repair changed something in my computer that has caused boot to Ubuntu to fail

sorry picture is hard to make out but the boot priority shows Ubuntu first

[oldfred]

Unless you booted Boot-Repair in BIOS mode and it converted back to BIOS, it seems like you should be ok?
I might try Boot-Repair again and make sure you boot it in UEFI mode.
You get grub menu when booting Ubuntu live installer in UEFI mode. And you get purple accessiblity screen with tiny icons at bottom if booting in BIOS mode.
Screens shown here:
Shows install with screen shots.
https://help.ubuntu.com/community/UEFI

[SuperFreak]

I am not using the boot repair cd but have temporily installed it on my Live Ubuntu. So as I showed in previous screenshot boot repair appeared to be in EFI mode(use standard EFI File checked). I notice that the Boot Repair has an option of backing up files; is that done automatically in which case could I restore things back to an earlier state? Where would the back up file be? and how do I restore it?

Truly lost here

I think I am booting Live in UEFI mode as the grub menu comes up (try ubuntu, install ubuntu, etc)

I am assuming UEFI sees my ubuntu install as it is one of the boot options

[SuperFreak]

Would it make sense to purge Grub before I reinstall it in boot repair

Purged Grub here is new Boot Repair summary http://paste.ubuntu.com/6277759/