Have Dell Dimension 8400 I fixed up with new disk and 4g ram. Put a clean Windows 7 32 install on the new 500g disk, and formatted the old 250 as a spare disk. Nice box!
My main machine is a Windows 7 64b Ultimate box - I can network to an XP SP3 box, and the Dell 8400 main disk (made a folder there and shared it). But the Dell box just won't allow any connection to that second disk or a folder in it.
All machines on same workgroup. AFAIK "HomeGroup" stuff is all turned off. I have a user by the same name on both Windows 7 machines... have REPEATEDLY gone over the network settings for private/public - and all seems correct.
Is there something about sharing a non-main disk? I just want a drop box on this Win32 machine as it will ultimately become a development server for MS SQL Server 2008 express.
I supposed this same kind of question has been asked a thousand times here - yet another testament to just how 'easy' Windows networking can be!