After proxmox-ve upgrade, it only boots into emergency mode

[Sinderella]

This is my first time using proxmox. I've just got a new ML10 Gen9.

FIrstly, I tried to install proxmox 4.2, it couldn't find some driver/module, I didn't want to bother fixing it and I found this thread.
https://forum.proxmox.com/threads/i...installations-not-possible-at-the-time.27436/
So I formated the disk and installed 4.1 instead. Everything was working fine until I upgrade using `apt upgrade` and reboot. I tried to fix the problem, but thought I did something wrong so I reintalled it again.

This time, I upgrade the packages individually and reboot for each upgrade since I couldn't figure out how could I fix the problem. It was working well, until I upgraded proxmox-ve package. It only boots into emergency mode since then.

As I said, I'm new here, so I attach everything I think it's useful for tracing what's wrong.

 

[Sinderella]

Anyone has any suggestion? Should I install it on top of debain instead? Will there be any downsides?

Thanks

 

[Sinderella]

I didn't add earlier that when I installed 4.2, I had this message below right after I select to install.

modprobe: ERROR: could not insert 'i915_bpo': Unknown symbol in module, or unknown parameter (see dmesg)​

 

[morph027]

Sep 10 15:47:16 pve systemd[1]: Timed out waiting for device dev-pve-data.device.
...

Looks like it fails to import the disks and filesystems.

 

[Sinderella]

Sep 10 15:47:16 pve systemd[1]: Timed out waiting for device dev-pve-data.device.
...

Looks like it fails to import the disks and filesystems.

I believe it occured that way because it had to wait for systemd-udev-settle to finish first; since it failed to do so, the filesystems became read-only.