Write Technology

Not everyone knows this, so I thought I would share. When do you use "disc" and when do you use "disk"?

A disc refers to optical media, such as an audio CD, CD-ROM, DVD-ROM, DVD-RAM, or DVD-Video disc. All discs are removable, meaning when you unmount or eject the disc from your desktop or Finder, it physically comes out of your computer.

A disk refers to magnetic media, such as a floppy disk or the disk in a hard drive or iPod. Disks are always rewritable unless intentionally locked or write-protected.

Although both discs and disks are circular, disks are usually sealed inside a metal or plastic casing (often a disk and its enclosing mechanism are collectively known as a "hard drive").

Although this definition was taken from Apple, the Microsoft Manual of Style is in agreement.

The International Council for Technical Communication has posted an amusingly illustrated but to the point “code of good practice.”
Here’s an example:

No.7: The communicator must not surrender to irrelevant, subjective demands for changes of information.