![]() These commands use information provided by the os-prober utility to add entries for other Linux distributions and Windows. Sudo grub2-mkconfig -o /boot/grub2/grub.cfg - Legacy boot method for grub update. Sudo grub2-mkconfig -o /etc/grub2-efi.cfg In case of disk replacement, or installation of another Linux distribution, /boot/grub2/grub.cfg should be updated. The GRUB configuration file is located at /boot/grub2/grub.cfg and is intended to be a static file that does not need updating. # grubby -set-default=/boot/vmlinuz-5.11.86_64 Updating the GRUB configuration file # grubby -remove-args= -update-kernel=ALL To remove one kernel parameter from all currently existing and future boot entries:.To add one kernel parameter to all currently existing and future boot entries:.To add multiple kernel parameters to a single boot entry:.To add one kernel parameter to a single boot entry:.The utility is a recommended way for making routine changes to the kernel boot parameters and setting a default kernel.įollowing are some of the selected illustrations of grubby usage: The grubby utility updates the bootloader-specific configuration files. GRUB 2 is the bootloader used on x86_64 systems, and on aarch64 if UEFI firmware is also used.Ĭhanging kernel command-line parameters with grubby GRUB 2 has replaced GRUB version 0.9x, which has become GRUB Legacy. The kernel, in turn, initializes the rest of the operating system. It is responsible for loading and transferring control to the operating system kernel - Linux in the case of Fedora. ![]() A bootloader is the first software program that runs when a computer starts. GRUB 2 is the latest version of GNU GRUB, the GRand Unified Bootloader. 5.3 Instructions for BIOS-based systems.5.2 Instructions for UEFI-based systems.2 Changing kernel command-line parameters with grubby. ![]()
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