Roon Nucleus only plays music from external SSD, it has not migrated to an installed Internal SSD

[xxx (Banned - toxicity)]

try this post -

Copy Music to Nucleus+ Internal Drive

Hi @epiekarc, We have information here about copying music to your internal drive. Nucleus can access music in various ways — over the network, from a connected USB drive, and in internal storage. For Internal Storage, these files must be copied to the internal storage device as explained in that article. If you have any other questions please let me know!