I just want to add to Gerads solution:
1.) I bought a 1TB Sandisk ULTRA 3D SSD as suggested.
2.) purchased Acronis and created an Acronis 2018 rescue CD
3) mounted the old BeoMaster disk and the new 1TB Sandisk ULTRA 3D SSD in my PC (no other drives)
4.) Booted my PC on the Acronis rescue CD and selected “clone disk”. Source old BM5 and destination new SSD
The clone process cloned the old BoeMaster 1tb disk, including 400gb music files to the Ssd. I mounted the SSD in my BeoMaste and everything worked - it was a 100% clone- just faster and silent!
I am sure that you can also use Acronis 2019 and 2020, probably also 2017.