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I have a Core Duo iMac that has been very heavily used and abused and it still has the original hard drive, still works, although there is an issue with video glitching out from time to time.

I'm kinda surprised. Kinda. That said I've had much older PowerMacs that run better for what they are (albeit much slower xD). I think the problem with the iMacs is they get too hot inside, and the new ones are much much worse about that.
 
your iMac won't last 5 years without a hdd replacement. Why do I type this? Most hdds don't last 5 years if they are used on a daily basis. Now on the good news side.

The new iMac will have T-Bolt. So if an extra wire does not drive you crazy an external hdd can be used over the internal hdd as a boot drive with better speed then the internal drive. The iMac's biggest flaw is the hdd is not accessible. The iMac's second biggest flaw is if the internal dies the fastest external is connected by fw800.

I own an iMac and I won't buy another if the T-bolt hookup is not bootable or if the hdd can't be simply swapped out.

I want this unit to be bootable:


http://www.lacie.com/us/technologies/technology.htm?id=10039


I will have no worries if it is.

VERY true. I've worked with PCs for 18+ years - hard drives are often the first to go out, and brand name has nothing to do with it. Physics does. :) The one disadvantage to the iMac is the sheer difficulty in swapping the HDD out.

The Thunderbolt might be bootable, but a properly accessible bay would be even better.
 
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