initramfs: Timeout while waiting for devices for / (and possibly /usr) filesystems to appear (did you specified correct ones) initramfs: Will cause kernel panic in 10s...
I chrooted to /dev/mapper/ubuntu--vg-ubuntu--lv and can see files. Tried mount directories to update initramfs but it shows 0 kernels..
Had a similar problem, to solve this I would better go into grub, it has more functionality than initramfs. You can try booting up from Grub (How do I boot my PC from GRUB?) or from USB stick with Ubuntu on it. After booting up, you have to reconfigure grub config files. Try sudo update-grub or vi /boot/grub/grub.cfg and almost at the end of the file you should be able to adjust from "Linux /vmlinuz root=/dev/mapper/vgubuntu-root ro quiet splash $vt_handoff" to your hard drive with root partition. In my case it was: "Linux /vmlinuz root=/dev/mapper/nvme0n1p3_crypt ro quiet splash $vt_handoff"
