Odroid - dietpi - Umbrel - ssd not found by umbrel

I have set up a system with Odroid n2+, OS Dietpi for Odroid, connected a samsung harddisk 1Tb usb3. I installed Umbrel with “curl -L https://umbrel.sh | bash” on the command line. The installation works perfect. Umbrel can be found at umbrel.local. When installing the bitcoin app the block are not written to the hardisk but to the internal ssd. That’s not what i want.

Before i installed umbrel. I mounted the ssd and formatted as ext4. On Dietpi the disk is found, Umbrel does not see the SSD. What did I wrong? Who can help me?