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 ...

If you have a Mac capable of running Classic (i.e., not an Intel-based Mac) but either reformatted the drive and installed only Mac OS X, or acquired the machine with only Mac OS X installed, you may ...

Like Lion (OS X 10.7) before it, Mountain Lion (OS X 10.8) doesn’t ship on a disc—it’s available only as an installer app downloadable from the Mac App Store ...

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 ...

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 ...

[Editor’s note: This article is part of our series of articles on installing and upgrading to Lion (OS X 10.7). We also have a complete guide to installing and upgrading to Mountain Lion (OS X 10.8).] ...

So you want to try out Windows 8. Excellent! But you’re not foolhardy enough to try using a developer preview build as your main work/play operating system–you just want to dabble. We’ll show you how ...

Mac OS X Mountain Lion gives users several ways to access the Terminal and three common options for formatting a hard drive. You can launch Terminal within Mac OS X to format hard drives currently not ...