If the size of the (accessible) RAM is limited, why isn't the hard disk?

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Published on 2010-03-25T16:59:16Z Indexed on 2010/03/25 17:03 UTC
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ram

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computer-architecture

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Hardware

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harddrive

When the number of possible RAM adresses is limited by the computer architecture (32/64 bit), why isn't the size of the hard disk limited?

Or is it limited? If yes, what would be the highest possible size of a hard-disk for a 32-bit computer?

How are the adresses of hard-disks handled then?

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