I have a Mac Mini with Mavericks installed, as well as a PC running Windows 7. I want to be able to read write from both computers to an external drive on the Mac. I created 2 folders on the drive and named them Movies, and TV Shows. The content of those folders are the respective files. I set up both folders to be shared on the Mac under system preferences, and then mapped the drives on the PC. I also created a user account with admin privileges on the mac that matched my PC. I then copied a Music folder to the root drive instead of using external, and set up sharing as well. File Sharing is selected for all three folders, however the music folder is the only one which allows me to change the permissions to allow read write to everyone, or to create individual user accounts to connect with read write permissions. The options to add users or change permissions are simply grayed out for the two folders on the external drive, so not only can I not write from my PC, but I can’t even do it on the Mac with the administrative user logged in. The folder on the root drive is fine but I cannot make any changes to the external drive at all. Get info for any folder on drive shows read only. SMB and AFP are selected for all folders under options. I can access all three folders from PC, but can only add files to the Music folder. I cannot do anything from either computer to the folders on the external drive.
