I recently had a failing disk replaced in my colo server. The server is running CentOS 7.3.
After the replacement, I was following these instructions to rebuild the RAID array that the disk was part of.
Everything went fine until I reached the final section (“Grub Setup”). This section talks about running a command line program called “grub”
to change the Grub configuration. And that program doesn’t seem to be installed on this server.
I admit that my knowledge of Grub is somewhat lacking. I know that CentOS 7 uses Grub2 rather than the original Grub, but I don’t know what replaced the “grub” command (or perhaps nothing replaced it and I
just need to install a missing RPM).
Any advice would be gratefully received.