Hi Strahil, that worked in the end after some fiddling... Installing a different kernel wasn't enough, apparently the bootloader was not updated, until I create the grub2 bootloader again. System is now up & running again, only shows degraded state... Creating backups (ova) first, move them to another hypervisor and let's see what the problem is Op ma 27 sep. 2021 om 15:01 schreef Strahil Nikolov <hunter86_bg(a)yahoo.com&gt;: > > Just take a CentOS DVD , select troubleshooting and then once you drop to a shell -> you can mount /proc/ , /sys , /dev & /run with the bind option and chroot. > > Then just follow the procedure for your boot type EFI vs Legacy and recover the files missing. > > Best Regards, > Strahil Nikolov > > > > > > > В събота, 25 септември 2021 г., 12:41:27 ч. Гринуич+3, <hans(a)jiflin.nl&gt; написа: > > > > > > Hi all, > > I am new here, been searching the mailing list on a regular base when I encountered problems and till now I always was able to keep the system up & running. > As said... till now... > I have oVirt at home, and I have about 7 vm's running on it. Lately I have had some troubles with my electricity, which results in a complete power outage on a irregular base. > Yesterday I had a power outage which left the system unbootable with the following errors: > > error: ../../grub-core/loader/i386/pc/linux.c:170:invalid magic number. > error: ../../grub-core/loader/i386/pc/linux.c:1418:you need to load the kernel first. > Press any key to continue > > Normally this can be solved following https://access.redhat.com/solutions/5829141, but his time also the files in /boot had a size of 0 bytes. So basically i did not have a working kernel on the system anymore. > > https://www.thegeekdiary.com/centos-rhel-7-how-to-install-kernel-from-res... does work for CentOS 8 also, but the ovirt 4.8 iso does not have the same directory structure. Using CentOS 8 installs a kernel, but not a bootable system. > > Is there a way i can start the installer in troubleshooting mode so I can reinstall just the kernel on the system? > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ > List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/UUPMHNC7BQ6...