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Where do i find the serial No on a IMac 4.1 please? I have looked on the "about this Mac" but it does not have the serial No on it!

Where do i find the serial No on a IMac 4.1 please? I have looked on the "about this Mac" but it does not have the serial No on it!

iMac, Mac OS X (10.4.1)

Posted on Apr 7, 2012 4:11 AM

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Posted on Apr 7, 2012 9:37 AM

Should be About This Mac>More Info>Hardware Overview


Is it not shown there? If not it probably indicates that the logic board has been replaced and the S/N was not loaded. There should also be a S/N sticker somewhere on the case of your iMac.


 Cheers, Tom 😉

9 replies

Apr 11, 2012 2:26 PM in response to ndapple

Until last July, the model identifier on every Intel Mac would tell you exact minimum and maximum expansion in terms of RAM, retail operating system, and any system specific required firmware updates, video and audio expansion capabilities, and patches for Wifi available. The serial number is only of consequence if you wish to date a Mac down to the week. This can help in determining system specific disks, available warranty, and exchange/repair program eligibility. Outside of that the year and month can usually be narrowed down to a six month period with model identifier alone on all except MacPros. So my question is, is it really that relevant for your needs?

Apr 12, 2012 2:40 AM in response to ndapple

You may not be able to get the serial number, however if you haven't erased anything, search for all folders created in 2006, and look for the first significant gap in dates, which would be the first folder you created. Search by date created. Use FindAnyFile if Spotlight can't find it. If you have erased your system, the only other chance is checking your financial purchases made in 2006. Otherwise you are probably out of luck. Once the logicboard is replaced like that, and no serial number is on the underside of the foot, most anything else that dates it is software. In the future always take down your serial number the day you get it.

Where do i find the serial No on a IMac 4.1 please? I have looked on the "about this Mac" but it does not have the serial No on it!

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