Hey,
have you found any solution to your issue?
I installed Unraid on a Beelink BT3 Pro but the 32gb of onboard emmc storage can't be chosen as drives.
Also any external drive i connect (SATA to USB Adapter) will only show up as an unassigned device instead of a normal drive.
I would appreciate if you've found a solution you're willing to share.
Greetings