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Re: Mac Serial Number

To: REALbasic NUG <realbasic-nug at lists dot realsoftware dot com>
Subject: Re: Mac Serial Number
From: Tom Benson <tombenson at mac dot com>
Date: Sat, 19 Feb 2005 07:55:57 +1100
Delivered-to: realbasic-nug at lists dot realsoftware dot com
References: <20050218153111 dot 84ECE734A3B at lists dot realsoftware dot com> <b4f6351fc8a30329466ebcc03aebaac8 at scriptsoftware dot com> <2568a00326e02b497c3d3c0cc60416f1 at mac dot com> <4dfa918e93b8b4346e8a795162f0c943 at shaw dot ca> <756ec70aabec4882f047e1b83001f3ea at mac dot com> <e80db152a98a354423bd15ffe6f8467d at shaw dot ca> <ff4e588cadb46155d4c4e70911cfa22f at mobleybros dot com>
Looks like it is Flashed to NV RAM sometime during the first startup. The only way to get rid of it is to have your logic board swapped. Of course you could probably wipe it via Open Firmware if you tried.

Cheers,
Tom

On 19/02/2005, at 7:24 AM, Phil M wrote:

On Feb 18, 2005, at 12:10 PM, Norman Palardy wrote:

Isn't the serial stored somewhere in PRAM and thus assumed to be constant?

No. Set on the hard drive and if you appropriately wipe the HD you can nuke this. Not in PRAM as that would add too much to the overall manufacturing process.

Understood. Does the system create a new serial while installing a new system? Anyway, a new serial can't be assumed to be unique, I suppose...

No.
It's actually on the hard drive and _may_ now also be in the PRAM. Swap hard drives and reset the pram and see. It's likely gone.

There are ways to get the Mac to NOT have a serial # and still be OK.

We sure seem to be going back and forth with this issue. Here is a Apple techdoc from 10/2001 which says you can restore your Mac Serial number by resetting your PRAM:

    http://docs.info.apple.com/article.html?artnum=106529

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