I just updated UD.
I'm not sure why it shows DEV1 for both drives on the main screen.
When I click DEV 1 for the first drive it shows:
dev2 Settings
Name:
Dev 2
Identification:
LOGICAL_VOLUME_0014380337D7200_3600508b1001cf95ff760c0e4274362fa (sdf)
Then when I click the second DEV 1
dev1 Settings
Name:
Dev 1
Identification:
LOGICAL_VOLUME_0014380337D7200_3600508b1001c9d70bb2587130140cdbf (sdh)
I have unmounted, remounted, formatted, etc the 250GB drive a few times, I've removed it and attached it to a Linux box and confirmed it works. Let me know what other information you might need its quite confusing.
tower-diagnostics-20220215-1307.zip