@nuentes Hello,
Following an IA seem to be dangerous already, no need for Skynet 
There is a documentation part about regenerating the initrd: https://docs.xcp-ng.org/troubleshooting/common-problems/#initrd-is-missing-after-an-update
You can likely used what you did above to mount the XCP-ng FS and then regenerate the initrd using this command.
It's not an initramfs that you need to generate but a initrd 
