Hello, I’ve destroyed my bootloader.
I installed manjaro on my laptop with i3 and it was working great. Then I decided to boot into a liveUSB of ubuntu server with said laptop, using it to install ubuntu onto a separate USB (such that the USB will function as a harddisk). The Ubuntu USB works great. My laptop does not.
When I used the ubuntu server installer I thought that the image wouldn’t touch the actual laptop hard drive, and it looks like the partitions are fine, but I think it screwed up something with booting, probably with grub. I just need a little help restoring grub. It looks like the partitions of the actual disk were left untouched. I have a 500MB sda1 which used to boot in UEFI mode. The partition still has the boot flag enabled, and it looks like the filesystem is Fat32. If I boot into my manjaro liveUSB I can mount sda1 and view the files. My sda2 partiton is encrypted with LUKS, so I can’t mount and view that (I haven’t tried manually mounting and decrypting) but this partition looks untouched as well.
When I try to boot, the laptop asks for my encryption passphrase like usual.
Enter passphrase for hd0,msdos2 (18d87a31...)
However after entering it correctly I get an error:
error: access denied error: no such cryptdisk found. error: disk 'cryptouuid/18d87a31...' not found
And I am dropped into grub rescue.
I’ve tried setting the root and prefix, and then running
insmod normal but grub’s
ls is saying that the filesystem is unknown for both partitions. I’d expect this from the encrypted partition but not the boot partition. This is strange because I can view the boot partition filesystem just fine from terminal in the liveUSB and even from the laptop BIOS menu.
grub rescue> ls (proc) (hd0) (hd0,msdos2) (hd0,msdos1) grub rescue> ls (hd0,msdos2)/ error: unknown filesystem grub rescue> ls (hd0,msdos1)/ error: unknown filesystem
My BIOS settings are set to UEFI mode with legacy disabled & secure boot disabled. In BIOS I can add a boot option and it allows me to select the following file system:
From there I can select the
EFI/ folder and select either
boot/bootx64.efi. I’ve tried both and the cryptodisk cannot be found in either case.
Additionally, oddly, in my BIOS there is a UEFI boot option for
HDD1-ubuntu and my actual harddisk (after adding it as described above) is labeled as
HDD2-1. The ubuntu server USB is not inserted in the laptop, I can only assume this entry is residue from the install. I can’t seem to remove it from BIOS alone like I can the manjaro boot option that I created.
- If I select the HDD1-ubuntu option I am taken to the same LUKS decryption screen before getting the same error as always
I think there is a simple answer to this but I haven’t been able to find any solutions browsing the web, namely because grub rescue isn’t recognizing the fat32 filesystem. I’d prefer not to have to reinstall the manjaro OS over top of this one.