Hi all, I had the same problem with my UEFI bios machine and I fixed it so for Centos 7: 1) Boot from an rescue linux usb 2) When the rescue system is running: 2.1) #chroot /mnt/sysimage 3) Config network: 3.1) # ip addr add X.X.X.X/X dev X 3.2) # ip route add default via X.X.X.X <--- default router 4) And finally: #yum downgrade shim\* grub2\* mokutil #exit #reboot I hope you can fix it with these steps. El 4/8/20 a las 0:56, Nicolas Kovacs escribió: > Le 03/08/2020 à 19:24, david a écrit : >> After trying several paths, some suggested on this list, here's my results. > Hi, > > Just back from a hiking trip. One of my clients sent me a message that his > CentOS server refuses to boot. So tomorrow I have to drive there to figure out > what's going on. I guess there's a high probability it's the issue discussed in > this thread. > > Simple question: besides a tsunami of mailing list and forum messages, is there > some to-the-point reliable information about this mess ? As well as some > to-the-point reliable information about how to fix it ? > > Thanks, > > Niki > --