How Much available disk space do I really have?
How much available space do I really have? When I do a get info on my startup disk, it says that I have 116.02 GB out of 249.2GB. When I use disk utility it says that I have 86.66GB out of the same 249.2GB. If I select the whole drive icon, not the partition icon, it says the following: This is the startup drive, you can't erase it. Disk size 249.2GB. Available space 76.21GB. Please explain why there are three different answers as to how much available disk space I have and which one is correct. Thank you
MacBook Pro (15-inch Early 2008), OS X Yosemite (10.10.4), MBP 15" mid 2012, 10.10.4 Mac mini 10.