Proxmox 6.4 unbootable after upgrade

ivarela77

Member
Feb 20, 2021
2
0
6
47
Good morning, I had a problem updating proxmox in version 6.4
I have a dedicated server at OVH with a proxmox installation in version 6.4 and I was trying to update to the latest version so that I could later update to version 7 following the proxmox update manual but I have no longer been able to access the graphical environment and I have had than putting the server in rescue mode. The problem is that the grub was lost during the installation and although I try to reinstall it following this post https://forum.proxmox.com/threads/proxmox-7-3-4-grub-upgrade-problem.120867/post-525245, I can't get it to work again.
If I run lsblk I get this
Sin título.png
with parted -l
Sin título.png

I hope someone can give me a hand. Thanks in advance
 
I notice two things
- md4 has error and unrecognisable label

- sda has 5 partitions while sdb has 4 only !?
 

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