Semi-OT question: os-prober is in CentOS, but I never see it running. I've got a server that's Ubuntu 18.04, and it seems to be running it every night, which confuses me - I can see no reason for that.
Since ubuntu is o/t, feel free to email me offlist - the only thing I've found in some googling is to chmod -x /etc/grub.d/30_os-prober on the ubuntu system.
Thanks in advance.
mark "the install of ubuntu doesn't even have a man page for it, while CentOS, of course, does...."