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Create linux grub on usb install#
Create linux grub on usb drivers#
Create linux grub on usb update#
Create linux grub on usb full#

Grub> root (hd1,0) # second hard drive usually is the USB drive if you have only one internal drive

Create linux grub on usb install#

# That was my hard drive with my linux install Possible files are: lost+found var etc media. Grub> root (hd0,1) # first harddrive, second partition Grub> find / # type the slash then press, and it will try to list files on this partitionĮrror 17: Cannot mount selected partition # Oops no file system here You can go through your devices like in this example: grub> root (hd0,0) # first harddrive, first partition Now search for your USB drive, using the root command to choose a drive/partition and the find command to see if you found the right one. At the GRUB menu, hit the C key to enter command mode. To check if your BIOS is able to detect the USB drive and hand it over to GRUB, just run GRUB from your hard drive if it already installed, or from a GRUB boot floppy or CD. The easiest way to boot from a USB Drive is to boot via GRUB. In this case the GRUB bootloader can do the job directly, without the need of an initial Linux system.

Note: If the computer was made between 20, it may contain USB drivers, but not an option to boot from USB.

Create linux grub on usb drivers#

A minimal Linux system contains the necessary USB drivers to continue the boot process.

Create linux grub on usb full#

They may not recognize USB drives initially, and may require operating system drivers to accomplish this.Īn alternative for older machines is to let the BIOS start a minimal Linux system on a BIOS supported drive such as a floppy disk, CD, or HD, and then transfer control to the USB drive to continue booting the full operating system.

They may lack a BIOS setting to allow booting from USB.

A modern BIOS (written after 2002) usually contains USB drivers and a boot from USB option but older computers often don't have these features. You can control which GRUB will be updated by using sudo chroot /mnt after mounting sdb1 to mnt.PCs use a system called the BIOS (Basic Input/Output System) to start the machine.

Create linux grub on usb update#

No, update grub should not delete information from the internal drive. Yes, you can get a GRUB menu from USB drive provided you have a full Ubuntu installation in that USB drive. Sudo grub-install –boot-directory=/mnt/boot /dev/sdb Partion (assuming sdb1) and specify where the rest of grub goes by sudo mount /dev/sdb1 /mnt Ifįor some reason GRUB is not installed, you can mount the USB boot Then GRUB should be installed at the time of Ubuntu installation. How do I install Ubuntu to a USB key? (without using Startup Disk Creator), If you have a full installation of Ubuntu in a 8GB or larger USB drive, See more at

If it is a live USB, the /boot/grub folder includes a loopback.cfgĪnd installing the rest of grub there may have unintended effects.

However, since GRUB puts its config files in /boot/grub, where those will go depends on what kind of Ubuntu installation you have in the USB drive. The command sudo grub-install /dev/sdb (where sdb is my USB drive) should work when booted from the hard drive with USB drive connected. The question is about installing GRUB on USB drive.