My Ubuntu installation won't boot even to recovery mode. What should I do?
1285
My computer boots to a black screen, what options do I have to fix it?
129105
Can't boot, no grub, "alloc magic is broken"
46173
Can't boot Windows 7 after installing Ubuntu
122007
Dual boot. How do I reinstall the Ubuntu partition?
35896
Ubuntu not booting: "Could not write bytes: broken pipes"
134817
How do I set Ubuntu to my default boot?
146201
'Upgraded' to Windows 10 on dual boot, and can't boot to Ubuntu partition
60507
Disk Utility (recovery mode) stuck at loading
144646
Can't boot Windows XP after installing Ubuntu 12.04
148742
What is the "Bootable flag" option when installing a distro?
157857
How do I boot my PC from GRUB?
115017
Black screen after clicking "Install Ubuntu"
144287
Mint 18 will boot only to a black screen
2653
What should I do when Ubuntu freezes?
71368
Ubuntu 12.04 won't install
78139
No grub menu after Ubuntu install, booting directly into Ubuntu
101728
Boot CD won't boot with a "x86-64 CPU,but only detected an i686 CPU" error