MacBook Pro :: Set Permissions On 2nd HDD - Unable To Access

I changed the permissions on my 2nd HDD in my optibay, and now I cannot access the drive. A little lock is displayed with the icon, and when i try to access it is says "you do not have permission to see its contents."

I changed the permissions in the first place because I formatted my primary SSD drive and was having trouble gaining access to some folders on the secondary drive. I got tired of setting "read and write" for each and individual folder, and so I clicked on the small drop-down menu with the gear that allowed me to set it for all the folder within that drive. I set "read and write", and after about an hour it finished processing that command. However, after it finished, the permissions read "custom" instead and I was denied access to everything on the drive.