I am using DISKPART to hide my recovery partition during normal OS usage. I use the 'attribute volume set nodefaultdriveletter' command.
When I do this, upon booting the recovery partition and initiating setup, setup complains it requires a device driver to proceed. It's acting like it can't find the installation files. When I click 'browse' at that device driver thing, I can see the installation media, but... it won't do anything. This is what is presented: https://kitfox.pkunk.net/images/screenshots/Screenshot%20from%202021-06-08%2014-36-09.png
I tried also using 'attribute volume set hidden' on the Recovery partition, but this makes the system unbootable. It just sits at the spinning circle forever when I attempt to boot the system. The boot menu never comes up, it never dies, just perpetually spinning.
I used this https://www.tenforums.com/tutorials/106215-factory-recovery-create-custom-recovery-partition.html guide to create my recovery partition and boot menu.