Using GRUB Rescue to Boot into Ubuntu 18. Then I will discuss some of the common GRUB Rescue commands. Identify from them the drive that has the Linux partitions, in my case /dev/sdb. Open a Terminal (CTRL-ALT-T) Run sudo fdisk -l to get a list of partitions. We are creating a USB because we want to get into Ubuntu Bootloader and try to fix it so that we get a boot menu to switch between Windows and Ubuntu. First, I will show you how to boot into Ubuntu 18.04 LTS operating system that I have installed. Boot with the Ubuntu Linux bootable USB stick using the option to try Ubuntu before installing. Specify your USB drive as shown below and check the box We will format your USB drive as FAT32 : Make sure beforehand to back up any important files. In the next section I will show you how to use GRUB Rescue. You should be able to go to the GRUB Rescue command line mode as you can see from the screenshot below. To go to the GRUB Rescue from here, press c. It looks something like the screenshot given below.Īt times, you will be able to see the GRUB menu as in the screenshot below. If anything goes wrong and it causes boot problems, then you most probably will see the GRUB rescue command line interface. In my case, it is the Ubuntu 18.04 LTS operating system. Getting into the GRUB Rescue Command Line Interface:īy default, if everything is alright, when you start your computer, you should be booted right into the operating system you’ve installed. I am using Ubuntu 18.04 LTS for the demonstration. In this article, I will show you how to use GRUB Rescue command line interface of GRUB. GRUB bootloader has powerful command line interface that can be used to solve boot problems.

Although GRUB is used widely in Linux, GRUB can also boot Windows operating systems as well. Use a tool such as Etcher to write the Linux image to an SD card or a USB flash drive. So let’s go see what the file looks like. It is called the bootgrub menu in the command line see below command. GRUB boot loader configuration is made by editing the /boot/grub/nf file. This example uses the Ubuntu 20.04 ISO image. And interestingly, GRUB access ext2, ext3, and ext4 file system all with the same driver. It is widely used as the default bootloader for Linux. Another way to fix your GRUB boot issues is to use a Linux live image to boot from an external device.

How to stop installing grub on usb