Link: https://linode.com/docs/platform/block-storage/boot-from-block-storage-volume/
Issue
Suggested Fix
It would probably be worth mentioning that the block storage volume needs to be the same size or larger otherwise you will run into a failure for disk space.
Additionally to reference the rescue mode guide for mounting the disks. I know that the link is there, but I think it is too easily overlooked if there is not a call out.