nach update kein booten mehr

hi,

benutzt du ZFS fuer das rootfs?

wenn ja, schau bitte folgende [0] [1]

If your system was installed on ZFS using legacy BIOS boot before the Proxmox VE 6.4 ISO, incompatibilities between the ZFS implementation in grub and newer ZFS versions can lead to a broken boot. Check the article on switching to proxmox-boot-tool ZFS: Switch Legacy-Boot to Proxmox Boot Tool for more details.

[0]: https://pve.proxmox.com/wiki/ZFS:_S...iring_a_System_Stuck_in_the_GRUB_Rescue_Shell
[1]: https://pve.proxmox.com/wiki/Upgrade_from_6.x_to_7.0#Unable_to_boot_due_to_grub_failure