Grub force text console boot

When using a virtual machine, and especially if the virtual machine is in emulation mode, which is generally many times slower than virtualization mode, it can greatly help interaction speed to use a console boot rather than graphical desktop. In operating systems like Ubuntu, this can be done by editing /etc/default/grub and setting:

GRUB_CMDLINE_LINUX_DEFAULT="text"
GRUB_TERMINAL=console

Then from Terminal:

update-grub

systemctl set-default multi-user.target

Then the system will boot into a text console on all future boots.

Reference