It's a common problem. ISOBUSTER might be able to read it before the session is closed.
Remember that open CD sessions has been problematic over the years. It's also possible that Sony had an app or driver to add this support.
Husband's camera has Sony mini cd's. Just found out it won't read then on Dell laptop with upgraded to Win 10 - or new desktop with only Win 10. Any help someone can give? TY