Rescue a non booting system

Hi,

There is an issue with latest 5.18 kernel when use md raid ( software raid ) . Kernel 5.18.2-1151 and mdraid volumes

If that is your issue you need to add /etc/mdadm.conf or revert the active kernel or the as I did installed lts kernel.

Adding /etc/mdadm.conf could be the simplest and faster option.
if decide to to with LTS kernel and you are you using - https://docs.01.org/clearlinux/latest/guides/maintenance/fix-broken-install.html documentation,
I would say to mount BOOT partition (in /mnt/boot after root is mounted ) if manipulate the kernels
sudo swupd bundle-install kernel-lts --path=/mnt --statedir=/mnt/var/lib/swupd

Good luck

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