Formatting a hard drive along with the install of a new OS is the best option. The vast majority of operating system installations provide a "format" option as part of the installation process.

Currently the drives are in spanned RAID mode, from what I can gather from the Command+R > Disk Utility read out. It says that it's got a 1.5TB hard disk, when there are 3x 500GB drives physically ...

Microsoft just made it feasible to install Windows on a small capacity solid state drive (SSD) or hard drive with not much space left. Using a new deployment option called Windows Image Boot, or ...

OS X Mavericks is officially out and ready for the public. It’s the latest OS X version from Apple and it comes with a heap of new features, including improved support for multiple displays, desktop ...

OS X 10.5.8, it says so in the page that you linked to (*) This means that you can try to obtain a 10.5 install disk (eBay, Craiglist, etc. Apple doesn't sell it anymore) and download the updates to ...

Apple has released OS X Lion as a download from the Mac App Store only; however, you can use the download to create a separate OS installation disc or drive partition to use for troubleshooting ...