Currently Being ModeratedAug 23, 2013 10:33 PM (in response to peregrineguy)
On your iMac, open > About this Mac > More Info. If System Information tells you that you have a Mid 2011 or newer iMac, the computer has got Thunderbolt. If you have an older computer, your iMac hasn't got Thunderbolt.
If your computer has got Thunderbolt, first you have to put the computer where you want to transfer the files from in Target Disk mode, holding the T key while your computer is starting. Then, your Mac's hard drive will appear as an external drive in the other one, so open a Finder window in the other Mac, select the other computer's hard disk in the Finder sidebar and copy the data you need. You can also copy data to the other Mac.
If you have an older iMac, check that it has got FireWire 800. If so, you can get a Thunderbolt to FireWire adapter for your MacBook and a FireWire 800 cable, and follow those steps
Currently Being ModeratedAug 24, 2013 2:07 PM (in response to peregrineguy)
For not so heavy files you can use "Airdrop":
Currently Being ModeratedDec 6, 2013 1:13 PM (in response to mende1)
I have an 2008 iMac and am trying to transfer about 17Gb to a 2011 macbook air. is it possible to use the usb-thunderbolt wire that come with iphones to transfer the data between the computers?