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Solved! How to erase hard drive from dell inspirion 1200

Solution
A quick format will not erase any files. A full format may or may not. Lots of conflicting statements about this online. The best way is to download a bootable disk wipe program. Google one. Burn it to a CD. Wipe disk.

Thanks, when i do that it asks for product key, then it says its the wrong key. had someone else erase it a few months ago could he have programmed a new key?
 

I am using the sticker on the back, using a burned windows xp disk along with original driver disk
 
A quick format will not erase any files. A full format may or may not. Lots of conflicting statements about this online. The best way is to download a bootable disk wipe program. Google one. Burn it to a CD. Wipe disk.
 
Solution