I enabled the Samba Server in FSD, used "Connect to server" on OS X and was able to mount the HDD1. All files and folders visible, no problem there.
But when I try to copy anything over, I get a notification saying "The operation can’t be completed because an item with the name xxxxxx already exists". A blank ghost file is created on the Xbox HDD and is only deletable with FSD File Manager. As if I had a permission to browse but not to write.
So, do I have to do some further tweaking (set up workgroups?) to get my mac and FSD Samba to play nice together?
EDIT: Just noticed, reading files don't work either