When you want to combine your mac disk, look here!

When I got my first mac, I set two disk for it. Several month passed, the top disk is nearly used up. Thus I want to combine it. Here is the way to combine the them.

First:Application---->Utility------->Disk Utility

Second:Copy the files in the unwanted disks 

Third:Deleted unwanted disks and resize the remain ones.(details in picture above)

That's it. Have a good day!