Currently Being ModeratedDec 20, 2011 5:02 AM (in response to BusterT)
Some MacBooks have Firewire, while others do not. See this tip:
If both of yours have Firewire, you can use the Target Disk mode described at the end of the tip. Otherwise, you'll need to pull the hard drive out of the machine that it is in, and put it in a 2.5" hard drive case that supports the ports that are on the other machine.
Note, if you can't read the data on the other machine, using a data recovery tool to a hard drive at least as large with no data on it is recommended. This tip explains how to do data recovery:10.7.1 iMac 5,1 MacBook Pro 3,1, Mac OS X (10.7.1), - * Links to my pages may give me compensation.