Proxmox kernel will not boot

[Pavel N]

I have dell r620. (rather old intel hw). I installed debian 11 with unencrypted boot and encrypted root. Everything worked fine. Then I installed pve-kernel according: https://pve.proxmox.com/wiki/Install_Proxmox_VE_on_Debian_11_Bullseye

apt install pve-kernel-5.15
systemctl reboot

Reboot failed early on "loading initial ramdisk"

I can still boot normally to debian with their 5.10 kernel. I installed pve-kernel-6.2.9-1-pve. It exhibit same error.

I tried nomodeset as grub param, it did not help.

I red all answers https://www.google.com/search?channel=fs&client=ubuntu-sn&q=proxmox+loading+initial+ramdisk, but nothing worked for me.

I run memory test (320GB ddr3), worked fine.

I feel like its connected to the LUKS encrypted (ext4) root. All debian kernels work, no pve work.

 

[noahmehl]

I just was working on this and having the exact same issue...

 

[noahmehl]

@Pavel N, I was able to resolve this by continuing on in the steps and installing proxmox and removing os-prober. Then I did:

update-initramfs -k all -u
update-grub

You may also need to do: proxmox-boot-tool refresh, if you're booting from bios (and not EFI).

 

[Pavel N]

I got over it by exactly following https://pve.proxmox.com/wiki/Install_Proxmox_VE_on_Debian_11_Bullseye except i installed kernel 5.13.
This one will reboot normally, installation of pve works fine and new kernels will boot normally after that. Including 6+ kernels