1 – Go to Terminal, copy & paste this command: gksudo nautilus that will open Terminal as root
2 – Navigate to your new drive, Right Click, select the Permissions tab
3 – Change the Owner drop-down menu to your name, then change Folder Access to Create & Delete Files, then File Access to Read & Write, then Group to your name, Folder Access to Create & Delete Files, File Access to Read & Write then click Apply Permissions To Enclosed Files.
You will now have full access to your drive.
