On UEFI-based systems, the command will be grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg If you like to see the standard boot messages, just delete rhgb.
#Grub2 themes full#
For example, if you like to see the full detailed boot messages, delete rhgb quiet. Kernel options that are common to each entry are defined on the GRUB_CMDLINE_LINUX line. GRUB_CMDLINE_LINUX="crashkernel=auto rhgb quiet" The content of the /etc/default/grub file looks like this: GRUB_TIMEOUT=5 However you can adjust the /etc/default/grub file that defines the general settings and the /etc/grub.d/40_custom file to add specific custom entries. The Boot Menu is Automatically Createdĭo not attempt to manually edit the boot menu because it is automatically created from files within the /boot/ directory tree. See also the upstream document on grub2 and the grub manual.ġ. This article is largely based on Things to Know About Grub2 and is intended for those who open /etc/grub2.cfg（or /boot/grub2/grub.cfg）in an attempt to edit the boot menu.
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