CentOS开机显示详细信息
vi /etc/default/grub
Remove rhgb quiet from this entry, should look like this right now
GRUB_CMDLINE_LINUX="crashkernel=auto rhgb quiet" change to
GRUB_CMDLINE_LINUX="crashkernel=auto" after making those changes you’ll need to rebuild the grub2 configuration file with
grub2-mkconfig -o /etc/grub2.cfg