On Sun, 2 Aug 2020 at 11:06, david <david at daku.org> wrote: > > > Sorry for being so ignorant, but I don't > > > understand "just reinstall the kernel". I don't > > > know how to translate that into a specific yum or rpm command. > > > >I agree it is a lot of shorthand because of expectations. In the end > >we (the list) don't know what you have on your system or what state it > >is in. In order to get that information to help we would need you to > >try the following: > > > >1. boot using a working USB/cdrom/netboot path and installer > >2. choose the rescue mode > >3. have the rescue mount the disks as local and chroot into the > >system. << if possible have the system also bring up networking >> > > > >Then > >yum list kernel shim grub2 mokutil > > > >It would also help to know which kind of Mac Mini it is (year, model, > >firmware versions). Apple changes the internal hardware of these > >things and how they boot so if there it may be that a particular model > >is more affected than others. > > > How does one obtain that information? There's nothing written on the box. > I don't have any access to a Mac Mini to help further than this general help: First I would search google for "how to obtain model version info on mac mini" https://support.apple.com/en-us/HT201894 Then depending on how the mac mini is being booted (using the windows compatibility mode or some other method) I would look for howtos on how to update the firmware. After that it is time to learn the Mac magic key boot sequences. The Mac isn't exactly a PC and its UEFI does not have a standard menu front end like many PC UEFI. https://support.apple.com/en-us/HT201255 https://support.apple.com/en-us/HT202796 -- Stephen J Smoogen.