GRUB error on Ubuntu 13.04: 'invalid environment block'
90542
Error: invalid environment block. Press any key to continue
129812
Error out of disk, grub rescue
111699
Grub command `loopback loop...` does not work on Ubuntu 19.10
12960
How to fix "not a valid identifier" error after setting environment variables?
151242
"invalid EFI file path" while booting Windows
6913
Grub update warning in Ubuntu 14.04
48941
How is /etc/default/grub generated during installation?
91334
GRUB2 security vulnerability: pressing backspace 28 times: What are my risks? What should I do?
145858
Ubuntu 12.04.3 LTS installation failed. says: "GRUB installation failed"
27017
How to fix a grub boot error : "symbol 'grub_calloc' not found
87551
How to repair grub?
130374
Error saying "unable to update ICE authority" while booting
139382
error: file '/grub/i386-pc/normal.mod' not found in ubuntu 13.10
96557
How to exit grub rescue?
32778
install the grub boot loader on a hard disk` failed on my pc
58095
Grub error: /usr/sbin/grub-mkconfig: 7: /etc/default/grub: splash: not found
110305
Why is Grub menu not shown when starting my computer?