Boot Ubuntu 16.04 into command line / do not start GUI

You could disable the display manager service with systemctl for example if your display manager is lightdm the run sudo systemctl disable lightdm.service. This will prevent the service from starting at boot. I forgot to mention how to start the GUI, Its as simple as...

5 Steps Start Ubuntu 16.04, 17.04 in Text Mode

The advantages of text modes as compared to graphics modes include lower memory consumption and faster screen manipulation. Text mode or console mode or command line mode saves a lot of RAM uses so most of the time it is very beneficial to boot desktop in text mode....

Lenovo BIOS Key

Generally the F2 key is used to enter the Lenovo’s notebook’s BIOS Setup, but some new models have a special button called Novo to replace Lenovo BIOS Key. If your Lenovo uses F1 or F2 key you can access to your BIOS by start pressing on to your key a few times to...