I have an old 09 macbookpro running 10.8.6, & have just bought a refurbed mid-2012 one running 10.11.5. I want to transfer some of my old files & apps from old to new, but not all of them. I'm looking for a simple way to do this; I'm not a techie, just an end user.
- Turn off the 10.8.6 computer.
- Connect it to the new computer with either a Firewire or Thunderbolt cable.
Hold T down on the 10.8.6 computer.This will boot it into Target Disk Mode
The 10.8.6 computer's disk should now be mounted on the new computer. You can transfer just the files that you want and then unmount the older computer.
Transferring the files with a USB flash drive would work as well.