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Best way would be to start it up with your OS X disc and format - reinstall the OS. Personally, I wouldn't do it any other way.
 
I'm stuck! Following the instructions on the link. I get stuck after I run through the security options. I have done the erase free space. but that is all and that didn't do it all. I clicked on Macitosh HD and that is my only option on erase. If I click on the HD above it - name 149.1 GB and a bunch of numbers - the volume format is now active. but I am not sure if that is where I need to be. I can then select a volume and I also see security options and erase. there are 5 volumes to choose form. Any suggestions?

Thanks for the help! I am planning on giving it to a great non-profit - youth coming off the street and trying to find their place in the work world.
 
To make doubly sure, I put all my files that I wanted to keep safe into the trash (I had them backup up elsewhere), then did a Secure Empty Trash. Then I did a Clean Install.
 
HELP!! I went to restart so I could try the above link and now I get this error. It has a box in the middle telling me I need to restart my computer, but every time I do the same stuff comes up. ont the top it says panic (appropriate!) then it has some cup stuff and says Unable to find driver for this platform. "powerMac8,1"

I tried to restart and I tried to remove the install disc.
:mad:
 
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