I followed the instructions on <a href="http://apple.stackexchange.com/questions/139157/restore-macintosh-hd-to-its-original-partition-configuration">this link</a> (last answer) to delete the Core Storage Logical Volume Group via terminal while pressing Cmd+R during startup.
These are the functions I used in terminal:

    diskutil cs list
    diskutil cs delete <Logical Volume Group UUID>

Now I cannot resize the partition via Disk Utility. The post mentioned that a red error message would appear when selecting the drive, but that didn't happen.  I'm stuck!

When I try entering "diskutil cs list" in Terminal it returns:

    No CoreStorage" logical volume groups found."

These are screenshots from the errors in Disk Utility:
![enter image description here][1]

After resizing the top partition by dragging down and clicking "Apply", an error message prompts: "Couldn't unmount disk". Also happens after I repair the disk. 
![enter image description here][2]

When restarting the computer, a grey screen with error icon appears. 
![enter image description here][3]

Any help would be greatly appreciated!


  [1]: https://i.sstatic.net/v3TgK.jpg
  [2]: https://i.sstatic.net/d1HwR.jpg
  [3]: https://i.sstatic.net/uF4y7.jpg