Replacing the PianoDisc disc drive with a store-bought one won't work.
Believe me, I've tried it.  You need to get one from Pianodisc.  The
store-bought ones don't properly read the PianoDisc format.  Besides,
I've never seen one with a black front.

Another suggestion for formatting: why not upgrade the EPROM?  I
believe the latest ones give you the option of formatting for regular
and double density discs.

Jeff Davis
In now-sunny Seattle, WA