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Serial number different in System Prefs


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Hi folks – another probably inane newbie question, I’m afraid. I’m currently helping someone out restoring a variety of MacBooks and iMacs to their original state by wiping the disk and installing OS10.5.2 from the original disks. I then need to check the warranty status etc via the serial number. So far so good, in most cases.

 

 

 

However... in 1 or 2 cases, the serial number which comes up in About This Mac is different from the one on the label on the unit (ie on the bottom of the stand on iMacs, underneath the battery on MacBooks. Spookily, the S/N in System Prefs DOES match the label on the original carton which the machine came in...

 

 

 

Note that I haven’t wiped and restored any such machines yet – it may be that the situation will right itself when I do that. I don't know at what stage, or how the O/S picks the serial number up and puts it in “About This Mac”.

 

 

 

Any ideas/info for me? Thanks as always...

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