Ubuntu 18.04 LTS GRUB Installation "FAILED"
111852
The 'grub-efi-amd64-signed' package failed to install target/
34181
Accidently installed grub to usb
8265
How to fix "error: unknown filesystem. grub rescue>
105937
Grub errors during UEFI dual boot for Windows 8 (can't find command 'drivemap')
149432
Grub Rescue prompt appears after deleting Ubuntu partition. Can't boot Windows
135373
Ubuntu 11.04 stops booting at grub console
13308
Ubuntu 14.04 LTS showing 'version message write failed' message while booting
19429
What is causing Mint 18.1 "grub-efi-amd64-signed failed to install into /target/" and following installation failure?
66116
Grub menu not showing up at boot
133478
Ubuntu 16.04: grub-efi-amd64-signed failed to install into /target/ error
33897
Broken /boot partition: input/output error
110305
Why is Grub menu not shown when starting my computer?
48941
How is /etc/default/grub generated during installation?
12237
Attempted Installing Ubuntu on Windows 8.1 UEFI, Confused about booting in UEFI, Legacy Mode
85376
How do I install GRUB on a RAID system installation?
30747
Encountered "/usr/sbin/grub-mkconfig: 8: /etc/default/grub: 4: not found" error while updating
129105
Can't boot, no grub, "alloc magic is broken"