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Show the OS X build number System
I found this out about five minutes ago.

If you open the About This Mac box, and click "Version", you'll see your build number. If you click again, you'll see your computer's serial number!

Has this been documented anywhere before?

[Editor's note: I've known about this since the Public Beta, but as near as I can tell, it's never been published here before! Someone else might be able to dig it up, but a search on "about" or "build" or "version" didn't find anything.]
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Show the OS X build number | 11 comments | Create New Account
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The following comments are owned by whoever posted them. This site is not responsible for what they say.
Does not work on my Beige
Authored by: entropic on Jan 29, '02 09:23:02PM

Does not work on my beige G3.



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Does not work on my Beige
Authored by: nagani on Jan 29, '02 09:38:34PM

Although I may be wrong, the build number should show up on every machine. The serial number is only for recent Macs, for which holding down the option key at startup allows the selection of a boot disk.

For what it's worth...



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Does not work on my Beige
Authored by: nagani on Jan 29, '02 10:17:09PM
I should have mentioned in the previous message that, in Apple's own words, the new Macs are called new world machines vs. old world machines, referring to changes in the capabilities of Open Firmware.

"Oh brave new world ... that has such people in it!"

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not exactly
Authored by: normcook on Jan 29, '02 10:29:24PM

you are very well probably right in your first reply (i dont have a newer machine to test this on), but the ability to hold option to choose the startup disc is not what makes a new world machine. my imac 333 is a new world machine, and i cannot hold option to choose the startup disc. a new world machine is one in which the boot up rom is stored on the hard drive as opposed to on a rom chip on the logic board



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not exactly
Authored by: nagani on Jan 30, '02 11:15:03PM

Thanks for the info. My memory is getting approximate these days...

Apple System Profiler displays the same machine information in its "Software overview" and "Production information" fields. It even includes a "Sales order number" for my TiPB 500...



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lol
Authored by: normcook on Jan 31, '02 02:04:19AM

i hear ya, i wouldnt have known that if i hadnt recently looked into linux boot loaders



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Doesn't work on my G-4 350
Authored by: macubergeek on Jan 30, '02 10:12:51AM

clicking on version just toggles between version and build number



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Doesn't work on my G-4 350
Authored by: noahb on Jan 30, '02 07:37:56PM

It works on my G4/450/10.1.2 BUT the SN shows a blank (as does it in Profiler) Any ideas how to get it back? I appear to have lost it after the last firmware update.



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Correction.
Authored by: W3iRd0 on Jan 31, '02 07:19:25PM
This is not your computers hardware serial number, this is your serial for Mac OS X. Next time you reinstall OS X, try choosing to send your information to Apple later, you will see that no serial will show up in the About This Mac dialog until you send Apple your information, my guess is that this is tech support related.

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This is wrong.
Authored by: nagani on Feb 03, '02 08:10:19AM
The same number is printed on my TiPB 500, on a sticker in the battery compartment.

Unless the battery includes a bar code reader —or a label printer ;>) this has nothing to do with software registration!

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This is wrong.
Authored by: outofcontrol on Feb 03, '02 05:35:38PM

Same goes for my Ti400 too!



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