How to share folders and files more than two levels deep???

Please help!

I am trying to set share permissions and Security for a stubborn Hard Drive on my home network.

I have four drives and successfully shared three of them and have total access to all files and subfolders on my network. The fourth drive however will not allow me to access folders and files more than two levels deep?

My network filesharing skills are not very good and would appreciate some advice, maybe on how to reset all the share permissions for example?

TIA

M

ps. I know you are not supposed to share Roots of drives (ie. D