How switch the grub from 15.04 to 14.04 in a system which has installed both
53799
Set "older" kernel as default grub entry
20204
How to safely change OS name in grub boot menu?
30233
How can I fix/install/reinstall grub?
89648
Grub: reboot to specific kernel
9466
How to get to the GRUB menu at boot-time?
127342
How do I boot into single-user mode from GRUB?
144330
Is there a way for grub to automatically reboot into Windows from Windows?
16289
How do I uninstall GRUB?
2136
How to roll back Ubuntu to a previous version?
104432
How to set previous kernel as default in GRUB (Grub customizer)
68509
How can I edit my Grub bootloader entries (Hide, Rename, Remove)?
40654
How to remove Windows from grub menu and boot straight to ubuntu?
60845
Looking for the right way to rename the GRUB boot entries
33540
How can I switch a 32-bit installation to a 64-bit one?
93688
How can I add a new operating system boot entry to the GRUB2 menu?
147559
Dual boot pc boots directly to ubuntu instead of showing grub menu
479
How can I boot with an older kernel version?