Mac Pro Can't See MS-DOS Fat32 HD on PowerPC G4 Connected Via Ethernet, But Can See Its Mac HDs

I have a Mac Pro (aluminum Late 2010) running 10.9.5 connected to a PowerPC G4 running 10.4.11 via a ethernet cable running from the 2nd ethernet jack on the Mac Pro to the ethernet jack on the PowerPC G4.

I've connected to the PowerPC G4 via the Power Mac's network connection and I am able to see and interact with two of the G4's HDs, which have 10.4 and 10.5 installed. The G4 also has a third blank HD which is formatted in MS-DOS Fat32 format which I can see on the G4's desktop. I can't however, see the Fat32 drive on my Mac Pro's Network window, just the two Mac formatted drives.

Is there anyway to see the G4's Fat32 drive on the Mac Pro?