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You may want to format your hard drive if it contains outdated business files or communications.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 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 ...

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 ...

This article is for people whose Macs came preinstalled with Mavericks. If you can download the Mavericks installer from the Mac App Store, you should instead use our standard instructions for ...