I'm not an experienced Mac user here but I'm just wondering, how do you reformat your iMac? I just want to clean all the softwares and files and start from zero.
You start from the installation DVD and use Disk Utility from the menus. And the HOWTO forum is *NOT* for questions, thank you.
Mac user since 1987. Running Mac OS X 10.9 "Mavericks" on a MacBook Pro Retina 13" & an iMac 27" and whatever's newest for my iPhone 5s, iPad Air and AppleTV 3.