It may need to be initialized. BUT I'M guessing you are in some sort of recovery mode and forgot to backup your files.
See if the deal at http://www.cnet.com/news/three-bundle-thursday-games-books-and-mac-apps/ is still going on for Data Rescue 4.
If you need a trial a software based demo version is at http://www.prosofteng.com/downloads/
This is not a sure thing. If you can't take chances, head to drivesavers.com now.
Yesterday I connected my external hard drive to my macbook pro. I wanted to activate the time machine so I have space on my mac. When the time machine automatically came up I forwarded it to connect it to the Time Machine. When the process started I recognized that mac is completely restarting and formatting the hard drive so I searched for any button to cancel the process because I had lots of files in it.
But there was no button so I separated it by pulling the usb cable. Of course the process stopped but after that I tried to connect the hard drive again. Unfortunately it didn't appear anymore.
The disk utility recognizes the external hard drive but I can't see it on the finder. I also went to preferences on finder and checked the box for external hard drives. Still nothing appeared.
Can anyone please help me?
My Macbook pro is OS X Yosemite Version 10.10.2 and the hdd is WD Elements.
MacBook Pro (Retina, 13-inch, Mid 2014), OS X Yosemite (10.10.2)