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Hitachi is one I know they use. It's on my MacBook Pro. I think they also use Seagate, but I'm not sure on which models. If you are trying to find out what kind you have, just click on the Apple Logo> About This Mac> More Info ...>under Hardware find something called Serial-ATA or just ATA for older Macs.
 
OK, I will take your question a different direction just in case you meant it differently when you said 'type'.;)

Current Macs use SATA drives as opposed to IDE/PATA drives in past models. In either case they have come from multiple manufacturers even within the same model line.
 
aahh back from holidays hey all!!!



i think the OP was wondering if you can buy any old HD to put into a Mac.. the answer is YES!!! of course you can!* its only the format of the drive that is different.

*as long as you are using the correct interface then you can use any drive.
 
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