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Note There are other, simpler, ways of setting the default entry, but they are prone to error if/when grub2-mkconfig is re-run.
These include directly setting the default in /boot/grub2/or setting GRUB_DEFAULT to either a number or an entry title in /etc/default/grub. XFS and LVM Note Since recent versions of Fedora and even RHEL/Cent OS have started using xfs and lvm by default, it's worth noting that these steps outlined here may need to be preceded with the necessary step to load the XFS and/or LVM module(s). If this partition contains /boot, the output will show the full name of vmlinuz and initramfs. Armed with the location and full name of vmlinuz and initramfs you can now boot your system. Declare your root partition: It's also possible to boot into a configfile that's located on another partition.
So, maybe, you need be sure that GRUB_SAVEDEFAULT is not set to true.
GRUB_SAVEDEFAULT is only useful if GRUB_DEFAULT is saved.
GRUB 2 is the latest version of GNU GRUB, the GRand Unified Bootloader.
A new configuration file is created with: The configuration format has evolved over time, and a new configuration file might be slightly incompatible with the old bootloader.
GRUB 2 has replaced what was formerly known as GRUB (i.e.
version 0.9x), which has, in turn, become GRUB Legacy.
It is generally safe to directly edit /boot/grub2/in Fedora.
Grubby in Fedora patches the configuration when a kernel update is performed and will try to not make any other changes than what is necessary.