Swapping HD drives around

I've taken out the hard drive and have flashing folder. However I know the HD was working as I swapped it out of another MacBook Pro (same model same month etc...)

I would put the old one back in as I switched them around because I was having to load OS-X on to the drive as the disk drive wasn't working, I just put in the HD that had OS-X on it already into the Mac this worked on another machine so assumed it would work here. Don't want to fork out for a new HD drive if i don't have too.

I tried doing a FireWire connection between MacBooks and the drive is there and is showing it available.

Do you think that this could be a logic board problem? I'm not convinced.

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It sounds like you've got your self all twisted about here. Can we start off getting the last four digits of your systems serial numbers (both) so we can get a handle on what systems you are working with here.

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The next question here is what is your goal? Are you trying to move the drive across because you are switching your systems? The more detail the better.

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