cannot change permissions on Seagate harddrive
I've done Cmd+I (get info).
It says I have read and write access.
I've opened the padlock.
It still says I don't have necessary permissions to make changes.
The more action button is ghosted.
It's my hard drive, my files, I still have the receipt.
My Macbook OS is up to date.
I'm just trying to drag/drop some photos, but it's not allowing me in.
Please advise.
MacBook, macOS 10.12