Boot in whatever mode won't work for 12.04
1285
My computer boots to a black screen, what options do I have to fix it?
7026
How to start Ubuntu in Console mode
43114
How do I set OS X to boot by default?
67836
Out Of disk, but still boots
755
What should I do to force the root filesystem check (and optionally a fix) at boot?
106283
Boot hangs after installing the latest driver from PPA and Ctrl+Alt+F1 keyboard shortcut doesn't work
146065
How do I fix booting process in Ubuntu 12.04 after the windows7 removed?
140346
I mistakenly disabled all services in Yosemite (10.10), now it can't boot
22116
How to enable numlock at boot time for login screen?
101728
Boot CD won't boot with a "x86-64 CPU,but only detected an i686 CPU" error
80116
Can't boot XP after Ubuntu Installation, how to fix?
108414
Why can't I boot off another drive or change BIOS options after hibernating?
89648
Grub: reboot to specific kernel
95152
How do I disable the boot splash screen, and only show kernel and boot text instead?
121308
How do I get the GRUB menu to show when starting my dual-boot system?
5602
Boot drops to a (initramfs) prompts/busybox
20425
How can I run a command after boot?