How to tell if you booted from a UEFI enabled machine 1dmesg | grep "EFI v" When enabling net.ifnames=o Edit /etc/default/grub Ammend line GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/swap vconsole.font=latarcyrheb-sun16 rd.lvm.lv=centos/root crashkernel=auto vconsole.keymap=us rhgb quiet net.ifnames=0` Then run …

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