I've been running Vista since it first released. Since day one, I've been able to share the root of a drive (share the entire drive, not just a folder in a drive).
I recently added a new drive, shared it, and have had problems with it the whole time (file permissions that don't stick, file access problems across the network). I tried fixing this tonight and found something very peculiar. All the "Sharing..." and Security options for every drive are gone. All the previous shares are just as they were and work perfectly, but I cannot access a Sharing or Security tab for any of the drive properties. I can access a share wizard if I right-click a folder and select Share, but that option no longer exists for any of my drives.
If I were to guess, the last patch my system got changed this behavior. Has anyone else experienced this and found a solution? Thank you for any input.