I used my new 4TB Seagate Backup Plus on my laptop. It said it needed to erase files to make it compatible with Time Machine. Now the 4TB is full and cannot be recognized. What should I do?
I'm on OSX El Capitan 10.11.3 and I have never used the 4TB Seagate Backup Plus before. I wasn't able to put files on it using the Macbook Pro. It was bought only a few hours ago.
After plugging it in, it asked if I would like to use it for Time Machine, and it needed to be erased for it to be compatible with Time Machine. It is my first time to use an external hard drive on my laptop, and it is also my first attempt to use Time Machine.
My external hard drive shows up only on Disk Utility now. Please help.
MacBook Pro (Retina, 13-inch,Early 2015), OS X El Capitan (10.11.3)