Need help before selling

[Eudyptula]

So, I'm selling my old iMac. I want to erase all of my personal information, but part of the deal was that the Microsoft Office Suite stays on the computer. Is there a way of deleting everything, while keeping the Office Suite?

 

[macthefork]

Format the drive and overwrite it with zero's. Reinstall the OS and give the buyer the Microsoft disks to install and register under their name. Microsoft now allows this for the 2013 version.