Thanks very much for the link and your reply. Yes, glibc and other core parts set with specific cpu flags is precisely what I feared. I suppose it's over to debian or prep the old box for recycling. Best regards. On Mon, Sep 5, 2022 at 11:07 AM Fabian Arrotin <arrfab at centos.org> wrote: > On 05/09/2022 16:15, Mike wrote: > > Hello All, > > > > RHEL9 deprecated version 1 x86_64 cpus. My old testbench HP workstation > > has such a version 1 cpu. I've tested install of Rocky Linux 9 and > > CentOS9Stream but no go upon reboot after install -- kernel panic. > > > > Is there a way to recompile the kernel to handle the legacy cpu after > > install -- via some other live cd, perhaps? > > > > Due to the fact I can't reboot after install, I'm not able to build a > > kernel using the following: > > https://wiki.centos.org/HowTos/Custom_Kernel > > > > Sidenote: I'd also like to include support for btrfs too, but first > things > > first. > > > > Thank you. > > To keep a long story short : don't even try :) > > Worth reading : > > https://developers.redhat.com/blog/2021/01/05/building-red-hat-enterprise-linux-9-for-the-x86-64-v2-microarchitecture-level > > So it's not only kernel but the whole userland and glibc (and others) > that would need to be recompiled, so basically rebuilding the whole > distro ... > > -- > Fabian Arrotin > The CentOS Project | https://www.centos.org > gpg key: 17F3B7A1 | twitter: @arrfab > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >