How to completely erase my hard drive?

I'll get an upgrade on my iMac 27 "late 2009. I don't want to turn with all my data on it. I took a return to the top.

Throw all the files with data sensitive, empty the trash, restart from a replacement startup disk, such as Mac OS X install DVD or partition recovery with 10.7 or higher and use disk utility to erase the volume.

If you replace all of the computer, use a disc. Mac OS X versions downloaded from the Mac App Store are related to your Apple ID and not transferable.

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Tags: Mac

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