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Why does grub not install on my USB?
GRUB install can fail on the USB because its MBR is too small. To install Lubuntu on the USB, I would simply create a persistant live-USB, via UnetBootin or else. This will act as a normal install, and will solve your boot problem because it will use a bootloader that will fit your USB MBR.
How to boot Linux and Windows 10 USB from Grub?
# The `0` in `hd0` is the device id, and the `1` in `msdos1` # is the partition id. # If you’re booting from USB, it is most likely to # name the USB itself as hd0 # You need to set root to one partition before # viewing any files grub> set root=hd0,msdos1 # Then you can view its files.
Can You update Grub on an internal drive?
No, update grub should not delete information from the internal drive. You can control which GRUB will be updated by using sudo chroot /mnt after mounting sdb1 to mnt. Hope this helps. Maybe you could, but this isn’t the preferred way to do it.
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.
How can I get the GRUB bootloader back?
The GRUB bootloader won’t take very long; when the boot rescue finishes, you can reboot your system to get the GRUB bootloader back. Using a Ubuntu desktop ISO is pretty similar to using the server ISO live USB stick. In this method, we will use the latest Ubuntu ISO file and burn it to a USB drive.
Where do I install Grub on my HDD?
“/dev/sda1 is the EFI boot partition (ESP partition) on my HDD I had read that GRUB bootloader must be installed to that partition.” What drive did you select during the installation of grub? You actually should select /dev/sda and not /dev/sda 1 as this is a partition. install-grub should than find the right partition by itself.
Why did grub install fail in Ubuntu 20.10?
During an Ubuntu 20.10 installation I received the error “Executing ‘grub-install/dev/sdb’ failed. This is a fatal error”. I was forced to restart. Ubuntu loads when usb is plugged in and windows loads fine when usb isn’t plugged in.