Grub seems to don't load its config from grub.cfg
137947
How to manually manage grub.cfg for Grub2?
152029
Make grub keep its default boot under kernel updates
1694
How do I set the grub timeout and the grub default boot entry?
74199
Boot GRUB to entry not booted to last time?
71816
How to make UEFI bios start GRUB, not Windows?
68087
How to prevent Ubuntu from overwriting grub bootloader after update?
103413
GRUB doesn't show Windows 10
127342
How do I boot into single-user mode from GRUB?
133911
How to disable Grub's menu from showing up after failed boot
90527
Why does my computer keep displaying the GRUB menu when it starts up?
136950
strange inability to require config/boot after upgrading to ruby 1.9.2
110305
Why is Grub menu not shown when starting my computer?
93688
How can I add a new operating system boot entry to the GRUB2 menu?
34510
Grub Customizer doesn't change image background
94793
How do you run update-grub?
135035
How to fix the UUID in Grub after restore from another machine?
134817
How do I set Ubuntu to my default boot?