Laptop restore: Where to go?

Suggestions?

Both my wife and I have MacPro's and want to sell them. Just looking to clean all private information off and basically put back to out the box status. Hers lags a bit with the rainbow wheel and mine just completely went black one day and could never get it back on. So basically get them working well enough to get a few bucks for them and wipe them clean.

You can but it back to out of box status with reinstall discs, but information on the hard drive can still be retrieved no matter what unless the hard drive is completely destroyed. Not many people have access to tools necessary to read scrambled data, which is what formatting will do.

ifyou boot to the backup tools, you can run disk utility and do a 7 pass wipe of the harddrive clear personal data, then reinstall the OS on the main partition.

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but information on the hard drive can still be retrieved no matter what unless the hard drive is completely destroyed

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If this were really true, hard drives would have unlimited storage.

Think about it.