Following all instructions exactly I get this:
“No drive found with an UmbrelOS install”
The SSD drive in question works just fine when connected to a Raspberry Pi. What additional troubleshooting can I do?
when you move the drive back to the Pi is it still working?
Yes, it continues to work just fine.
I tried again and it got to the next step this time. I did plug in the HD and let it sit for a few minutes before attempting to start the migration, so maybe that was it?
It took almost 30 minutes for my migration to be completed, but everything went smoothly after that.