Yes, my friend tried this with a TwinStore. It was actually his dealer that put in the 3TB drives and could not get them to work.

Based on the C10/C15 running on Windows XP I just assumed the TwinStore would use the same operating system.

So much music, so little time.
Sooloos Control:10, TwinStore (4TB)
McIntosh MDA1000, 60th Anniversary C22 & MC75s
B&W Signature Diamond