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 ...

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.

You may want to format your hard drive if it contains outdated business files or communications. A system recovery disk contains your as-shipped operating system. Used to format the hard disk, it ...

If you’ve got an Apple developer account and a Mac, you might want to instal the latest OS X 10.11, better known as El Capitan, onto your machine right now. Until it’s out of beta, though, you might ...