Upgrade 8 -> 9 crash on welcome to grub

xeonic

New Member
Jun 7, 2026
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Hello,

I upgraded my Proxmox setup from 8 to 9 but after rebooting my system crashes on the Welcome to grub screen (only visible for a split second). It completely turns off and boots into BIOS.

I am trying to do the steps from the Recover from Grub Failure wiki (https://pve.proxmox.com/wiki/Recover_From_Grub_Failure) page but when selecting debug (terminal) mode the system hangs on "modprobe: FATAL: Module shpchp not found in directory /lib/modules/7.0.2-6-pve".

Any advice on how to proceed?