The bootloader that most Linux operating systems go with is known as Grub. It’s a simple tool that can be configured to boot up your Linux distribution, as well as other operating systems all from a menu when your PC starts up.
Grub is a reliable tool compared to other alternative Linux bootloaders, and for this reason, it has remained a favorite in the community. That said, it’s not perfect. For as reliable as it is, errors can happen, and Grub can break.
The best way to prepare for when your Grub bootloader takes a turn for the worst is to back up the Linux bootloader to an external hard drive or USB stick.
See how to do this at www.addictivetips.com/ubuntu-l…