boot menu shows up but Ubuntu won't work
135692
ubuntu 14.04 black screen when installing
69493
Add GRUB menu item to boot into terminal
64823
Installed Ubuntu alongside Windows 8, and W8 won't boot anymore
135382
Ubuntu won't boot - kernel error?
144646
Can't boot Windows XP after installing Ubuntu 12.04
46297
Grub does not show a Windows 8 option after dual boot
80116
Can't boot XP after Ubuntu Installation, how to fix?
72845
Ubuntu won't boot with Windows7
9466
How to get to the GRUB menu at boot-time?
133911
How to disable Grub's menu from showing up after failed boot
108195
Grub menu at boot time... "holding shift" not working
129105
Can't boot, no grub, "alloc magic is broken"
134817
How do I set Ubuntu to my default boot?
79916
Just installed ubuntu 14.04 but after restart it wont boot
112535
How to access the grub boot menu in order to generate bootchart?
48388
Ubuntu boots from USB but get GRUB rescue after installation
47167
Installed Ubuntu 15.1 on USB (full install) but it won't boot