Choose boot Kernel

Proxmox comes with a built-in tool called proxmox-boot-tool . We can list the available kernels on the system and choose the best kernel and set it to always boot from this kernel. 

 

 List and choose boot Kernel 

 proxmox-boot-tool kernel list 

 Example output: 

 

 Now that we know which kernel we want we must run the following command and reboot. 

 proxmox-boot-tool kernel pin 5.15.108-1-pve && reboot 

 This will pin the kernel we want to use. We may need to unpin a kernel we don't want. The following command can be used to remove a kernel from the pinned list 

 proxmox-boot-tool kernel unpin 5.15.108-1-pve