I wanted to replace the kernel with the rc release and now my system cannot boot. I did a couple of tests and realized that if I add another kernel to the regular kernel, then everything is fine, but when I want to replace the kernel, my system breaks down, or the boot partition
Is it maybe, that the NVIDIA module or equal is missing?
We maybe found the reason for, we are still investigating.
You can have several kernels installed. You dont need to remove the old one (this is also not suggested to remove the old kernel!)
Any solution ? I have done something similar : I installed hardened-lto kernel and removed regular kernel and I cannot boot anymore. Can I reinstall the regular kernel from a chroot ?? (I’m using refind to boot).
Answering my own question since I found a way to get back on cachyos.
I just booted on my other drive that has a Fedora with zfs, then imported the zpcachyos pool on a /mnt mount point, loaded the key to decrypt pool, mount all zfs filesystems, mount the boot and /dev, /proc, /sys, … then I chrooted in .
After I reinstalled linux-cachyos and linux-cachyos-zfs, Then I could umount everything and export the pool and I successfully rebooted on cachy.
Not for the faint of heart but it worked. I then removed the cachyos-hardened-lto from the bootable kernels and only keeped the regular kernel. 