A dual boot Mac? Where you want to play music on the dual booted side? Hmm, my experience with Mac users is that they normally don't want to use windows if they can ever avoid it.
What's your use for Windows in this case? Many windows programs can be run under virtual machines instead, which is far more convenient.
Either way, you can do a few things as a test. You could try making a FAT32 volume instead. FAT32 is supported natively by OS X. It won't hold any files larger than 4 GB, but for music that should cover pretty much every single file you might have.
Note that it's possible to repartition disks on a Mac non-destructively in SOME cases. You might be able to add a small FAT32 partition to your existing disk. MAYBE. Definitely make sure you have a full verified backup before you start!
You could also put *just* the DSF files on another partition. If FAT32 works, then you're all set. If not, then you could make a small HFS+ partition and just copy the DSF files back and forth from your main partition to the HFS+, etc. MC can use multiple folders, disks, etc, and show them all in your library views transparently. This solution would obviously require some thought and discipline in your processes. Just throwing it out there.
Good luck to you.
Brian.