Grub change uuid, at the GRUB menu, select the proper disk to

Grub change uuid, If you wish to avoid such a problem, you may use the UUID of a partition and the UUID of a filesystem instead of a GRUB designator to specify a device. cfg and replace root=/dev/ sdXx with root=UUID= XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX. Jan 28, 2026 · Modify the /boot/grub/grub. If the root partition already uses UUID, no change is required. Correction: The UEFI bootloader would refer to the partition UUID for the EFI partition. GRUB is a program that boots the operating system. This will install the default grub-pc package: If your system has EFI or OpenFirmware rather than a BIOS, you may have to install a different package, such as grub-efi. The change may cause boot failure because grub. You can use the blkid command to get the UUID of your device, see Persistent block device naming. cfg refers to some “old” designators. at the GRUB menu, select the proper disk to I can change the 2nd uuid at startup (with E) and it boots sda9. I tried various methods unsuccessfully. Its configuration file can identify a disk partition by either its device name or its Universally Unique Identifier (UUID). We would like to show you a description here but the site won’t allow us. GNU GRUB (short for GNU GRand Unified Bootloader, commonly referred to as GRUB) is a boot loader package from the GNU Project. If I can not revert to sda1 I will need to change the UUID of the clone in the grub. cfg). cfg file and use the UUID of the root partition to configure the boot item. Update 2017-10-26 The kernel-parameter for root= will be changed to the disk - see the answer from Thomas below. Sep 22, 2025 · Learn how to retrieve and change partition UUIDs on Linux using command line tools. Aug 3, 2012 · In my case, the UUID that grub installed was different from my present UUID (sudo blkid) for my Windows partition (confirmed in grub. This guide explains how to modify the GRUB configuration file to use a UUID to identify a disk partition. If you did want to install it by hand you would run apt install grub2 as root. But does it definitely also change the filesystem UUID? It changes both the disk and partition GUID/UUIDs. Jan 25, 2026 · In this case you might have to manually edit /boot/grub/grub. Sep 28, 2017 · Base is a new (virtual) disk device with a different UUID. cfg to the new UUID - which is plan "B". To guarantee the correct booting of the system even when the device name changes, you can modify the disk identification method in the GRUB file to the Universally Unique Identifier (UUID). Secure your system configurations with effective UUID management. GRUB is the reference implementation of the Free Software Foundation 's Multiboot Specification, which provides a user the choice to boot one of multiple operating systems installed on a computer set up for multi-booting or select a specific kernel configuration The latest grub is usually installed for you, for example by the DebianInstaller. May 3, 2019 · find the UUID=xxxx at the beginning of that same line change the entire UUID=xxxx portion to /dev/sda1 control + x or F10 to continue to boot after the edit once booted, sudo update-grub, then reboot enter the BIOS boot menu and select SDA to boot from, or change the boot order to CD-ROM/SDA/SDB/etc. So how can I get grub. Feb 5, 2026 · From the docs of sgdisk, it seems clear that it changes the partition UUID. Isn’t the partition UUID is what’s being shown in both of your commands. . cfg corrected so that the sda9 GRUB list entry boots from sda9 permanently? However, these device names may change due to the change in the actual operating environment after an image is imported.


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