Ubuntu directly boots up without giving me a chance to reach Advanced Options
108195
Grub menu at boot time... "holding shift" not working
59017
How to repair Ubuntu installation after interrupted dist-upgrade without losing any custom settings?
462
No admin access to BIOS to change boot priority
96292
How to boot from a live cd
146685
Booting into text mode - how can I fix it?
78405
I can't get grub menu to show up during boot
9128
How do I set Windows to boot as the default in the boot loader?
10925
Grub not loading config file or booting into linux automatically
148742
What is the "Bootable flag" option when installing a distro?
21279
How do I add a kernel boot parameter?
157083
How to remotely control which OS Grub boots?
146129
How do I auto-login as root into the TTY upon boot?
96227
Dualboot windows and Ubuntu but automatically boot in Ubuntu
40585
What is the most reliable way to get a Windows 8/8.1 computer into Advanced Startup Options menu?
89378
How do I create a completely unattended install of Ubuntu?
2098
How can I install Ubuntu without removing Windows?
117813
How to enable virtualization on booting? (Ubuntu 13.10)