![]() $ sudo grub-install -boot-directory=/boot /dev/sdaįinally, reboot and check if it can boot from disk. After changing a bootable flag, make sure to press w to write the change to disk.Īfter this, use the following commands to install GRUB bootloader. You can press a on fdisk to toggle a bootable flag. GRUB 2 can be installed from any device using the grub-install command. By selecting the root directory, installing modules, and running specific setup files, the user can change the installation. ![]() Install GRUB boot loader onto the proper disk (the example below assumes it is /dev/sda ): sudo grub-install -recheck -no-floppy -root-directory/ /dev/sda. Run grub-install as root to change the installation device or boot files for GRUB 2 installations. ![]() A new window in which you can select the Ubuntu ISO will open. This icon is in the lower-right side of the menu. It's on the left side of the VirtualBox window. Find out the name of the internal disk by using fdisk to look up the device's size. Installing Ubuntu 1 Double-click your virtual machine's name. If the boot partition is not bootable, mark it as bootable. Here's what I'd do: Boot the machine using a Live CD. If the partition is bootable, it should show * under Boot column in the fdisk output. In this tutorial, it is assumed that /dev/sda is the disk which contains a boot partition.įirst, using fdisk command, verify that the boot partition (typically the first partition) in /dev/sda is tagged as bootable. Here is how to install GRUB bootloader on MBR on Ubuntu or other Ubuntu-derivatives such as Linux Mint. If GRUB bootloader is not loaded properly, you can try re-installing GRUB bootloader on MBR. In Linux, master boot record (or MBR) is a reserved space in disk storage which stores an OS bootloader as well as disk partition table. How can I re-install GRUB bootloader on my Ubuntu? I suspect GRUB bootloader was not properly installed during Ubuntu installation for some reason. Search: Fix Ubuntu Bootloader Windows 10. The VM will boot from the DVD Drive, which has the Ubuntu Server installation CD image loaded. Question: My Ubuntu fails to boot from disk after a clean installation.
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