Have a old macbook 2006 with newer 500 GB seagate Momentus hard drive. I took mac to apple store and they said logic board is bad. Can I purcase another used macbook and install my old seagate hard drive and have saved my information? Thanks for any imput

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As the problem is with the logic board, they won't replace the hard drive, so you will keep everything. Note that the hard drive isn't soldered onto the logic board

You can do that without any problem. You can install that hard drive as the internal drive or put it into an enclosure

mgott55 wrote:

Can I install my used existing hard drive in a compatible macbook to save everything?

If you need to extract the drive's content you can remove it and install it in a $10 USB enclosure. It will be readable by any recent Mac.