Help with deleting existing OS

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Sep 26, 2009
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Hi guys, yesterday I bought a unibody macbook from craigslist and it had Leopard installed on it. I wanted to upgrade to Snow Leopard and I thought it would be a good thing to do anyway because I wanted to delete the current OS because I didn't want any of the previous owners files or settings - I wanted to start fresh.

I was told that by installing Snow Leopard that the computer would automatically delete the existing OS and replace it with the new one, but after I upgraded, all the old files and settings were still there even though I was prompted to enter my name and information.

When installing the new OS are there special steps that I need to take to completely clear everything that was there before? I want to restore everything the factory settings.

Thanks, guys. :)
 
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Aug 30, 2009
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Hi guys, yesterday I bought a unibody macbook from craigslist and it had Leopard installed on it. I wanted to upgrade to Snow Leopard and I thought it would be a good thing to do anyway because I wanted to delete the current OS because I didn't want any of the previous owners files or settings - I wanted to start fresh.

I was told that by installing Snow Leopard that the computer would automatically delete the existing OS and replace it with the new one, but after I upgraded, all the old files and settings were still there even though I was prompted to enter my name and information.

When installing the new OS are there special steps that I need to take to completely clear everything that was there before? I want to restore everything the factory settings.

Thanks, guys. :)
The default Snow Leopard install is designed to upgrade a system, as in upgrade all system files and save all user files and data.
You can use the Snow Leopard install DVD (Disk Utility) in the top menu bar to do a complete disk erase, even repartition the drive.
This will get the clean new install you desire.
 

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