At 07:57 AM 8/2/2020, you wrote: >On Sun, 2 Aug 2020 at 10:20, david <david at daku.org> wrote: > > > > > > ><snip> > > > > > > > > > > > >> Yes .. it should be on mirror.centos.org now .. you could change the > > > >> repo where your updates come from. OR > .. wait for that mirror to get > > > >> updated. > > > > > > > > > > > > I just did > > > > yum clean all > > > > yum update > > > > > > > > and 15-8 showed up. Maybe the 'clean all' > > > did it, or maybe just showed up. > > > > > > > > I applied the update (yum update), rebooted and... > > > > no boot. Just a blank screen. > > > > > > > > Hardware is a Mac-Mini :-( > > > > > > > > This is not an essential machine, so I could re-install (from > > > > netinstall) if you think it's worth the effort. > > > > > > > > Or what? > > > > > > > > David > > > > > >You just need to reinstall the kernel and it should work. > > > > > > > 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. David