[SOLVED] VE New Install (ZFS RAID 1) upgrade proxmox-kernel-6.8 fails

[crossroadstech]

Wanted to share this on the forum in case this can help someone else.

Issue: New install of Proxmox VE 8.2-1 (April 24, 2024) ISO which comes with kernel 6.8.4-2-pve. 2 hard drives and selected ZFS RAID 1 in installer. After disabling Enterprise repos and enabling Community, upgrade would fail to install the newest kernel (6.8.8-4-pve) in the Community Repo.

run-parts: /etc/initramfs/post-update.d//proxmox-boot-sync exited with return code 1​

Analysis:

• Complete reinstall from beginning still yields same result.
• There were 2 entries in /etc/kernel/proxmox-boot-uuids . One UUID was no longer valid or doesn't exist.

Fix:
proxmox-boot-tool clean
apt upgrade proxmox-kernel-6.8
proxmox-boot-tool kernel pin 6.8.8-4-pve
proxmox-boot-tool reinit
proxmox-boot-tool refresh
reboot