changing iMac hard drive

[Pyx Findlekind]

>
>Date: Tue, 14 Jan 2003 09:24:45 -0500
>Subject: [HM] Re: changing iMac hard drive
>From: b1ywov85 <mouse1701 at SYMPATICO.CA>
>Message-ID: <BA4987DD.4DB%mouse1701 at SYMPATICO.CA>
>
>
>>  Is this 7200 RPM installed in an iMac? Is there an issue with
>>  overheating? Is there an increase in the noise level?
>>  PYX
>  i upgraded the hd in my imac..i would not recommend..(nor would apple) you
>use 7200rpm..i used a 5400..runs cooler..the imacs (some models) do not have
>a fan.. the high 7200 drive runs tooooo hot for those imacs...stick with the
>5400 and you will have no problems..i have not had one yet.

It's hard to imagine Apple recommending any sort of tampering, 
including the 5400. Do they actually support the concept of upgrading 
HDs?