Contents
How to use Grub2 as universal bootable USB drive?
To use grub2 as the universal USB drive bootloader, you have to install grub bios/uefi on FAT32 partition. If you have large files above 4G, consider seperating the boot partition with data partition. You could use exFAT or NTFS as the data partition.
How can I boot from a USB drive?
If you have your bootable USB drive, insert it into the computer. When the GRUB screen appear, press C or ESC to go to the GRUB console. You should see the grub> prompt. First, check if GRUB detects your USB drive.
Is there a way to boot Windows from Grub?
Grub does not officially support bootint Windows in place, and therefore chainloader should be used to load the windows bootloader to load windows. Normally, when correctly flashed a bootable Windows USB, the firmware should be able to load you into Windows.
How to install UEFI operating system in Grub rescue?
If you’re in grub-rescue, you’ll see the partition differently: grub> ls (hd0) (hd0,gpt1) Install a UEFI compatible operating system requires that a ESP (EFI System Partition) is available on your hard drive. You may use the advanced partition mode to configure your installation.
Can a grub mount a writable drive in Linux?
Grub doesn’t mount a drive as writable, but Linux does. So you want it on the linux line. For example: Thanks for contributing an answer to Unix & Linux Stack Exchange! Please be sure to answer the question. Provide details and share your research! But avoid … Asking for help, clarification, or responding to other answers.
How to check if Grub MBR has successfully installed?
This answer uses file -s /dev/sda to see if the GRUB MBR has been successfully installed. Past that, you could definitely double-check the values in /boot/grub/grub.cfg to make sure the UUIDs match up with the values in /dev/disk/by-uuid, and make sure that everything looks right in /boot/grub/device.map.
Why is Ubuntu not able to install Grub?
The biggest gotchas in my experience have been not updating the GRUB configuration, not installing GRUB on all the drives, or improper partitioning that makes it so you can’t install GRUB without using –force. Thanks for contributing an answer to Ask Ubuntu!