but it do accept sharing from a mounted network drive like E: or similare.
Depending on the Windows version you use, you either right-click on the path you want to share and choose "connect network drive" from the context menu, or you choose "connect network drive" from Explorer's Extras menu and then browse to the path to share. (I don't know the exact words because I use the german version).
You can then choose a drive letter and if Windows should try to reconnect the drive on every boot up.
Bye,
Thomas