Unable to boot to Ubuntu after a restart
5413
How can I repair grub? (How to get Ubuntu back after installing Windows?)
141240
Problem booting after updating from Ubuntu 14.10 to 15.04
3776
How to restore a system after accidentally removing all kernels?
148973
How to restore Windows boot loader after removing Ubuntu
134817
How do I set Ubuntu to my default boot?
113006
Grub rescue after removing Ubuntu?
55300
Can't boot from Ubuntu USB stick
39651
GRUB Help and Reinstalling Ubuntu
129812
Error out of disk, grub rescue
142224
Computer wont boot to windows
89648
Grub: reboot to specific kernel
9466
How to get to the GRUB menu at boot-time?
21039
Can't boot Windows 7 after installing Ubuntu 12.04 LTS
50062
Booting Ubuntu Failure : error: attempt to read or write outside of disk 'hd0'
127342
How do I boot into single-user mode from GRUB?
4206
Not booting from USB or CD (SYSLINUX Message)
143622
Ubuntu doesn't boot!