I need help /dev/mapper/pve-root does not exist

[grxx]

Spin up the server with a Ubuntu-CD and chroot into your Proxmox installation. There you should be able to install a 6.5 kernel.
https://www.suse.com/de-de/support/kb/doc/?id=000018770

I didn't understand, i'm not an expert about these things, how can i access rescue mode?

 

[devaux]

I didn't understand, i'm not an expert about these things, how can i access rescue mode?Just

You could boot from a Ubuntu or SystemrescueCD DVD/USB-Stick. Then mount the storage and chroot into the system. Then it's like you are inside your Proxmox installieren. There you can do "apt get update" and install a 6.5 kernel.

 

[grxx]

You could boot from a Ubuntu or SystemrescueCD DVD/USB-Stick. Then mount the storage and chroot into the system. Then it's like you are inside your Proxmox installieren. There you can do "apt get update" and install a 6.5 kernel.

I'm not an expert, how can i do that

 

[devaux]

Ok now i'm on Systemrescue and mounted pve/root, now where i have to install the kernel and how can i do it?

Look here how to chroot: https://www.suse.com/de-de/support/kb/doc/?id=000018770
Then use the commands:
apt-get update
apt install proxmox-kernel-6.2
proxmox-boot-tool kernel pin 6.5.13-5-pve
proxmox-boot-tool refresh

exit and reboot from Harddisk.

 

[grxx]

Look here how to chroot: https://www.suse.com/de-de/support/kb/doc/?id=000018770
Then use the commands:
apt-get update
apt install proxmox-kernel-6.2
proxmox-boot-tool kernel pin 6.5.13-5-pve
proxmox-boot-tool refresh

exit and reboot from Harddisk.

At the end i found a solution

1. Boot into SystemRescue
2. run vgscan to see the name of the prinipal drive of proxmox (for me (deafult) was pve)
3. Continue with this guide https://pve.proxmox.com/wiki/Recover_From_Grub_Failure#Temporary_Workaround:~:text=and PVE 8.-,PVE 7.x,-This subsection applies

Thx for the help!