Blog by an Apple Certified Tech

Disc and Disk – The Difference

The word disc always refers to an Optical Media, which is external and commonly known as CD, CD-ROM, DVD-ROM, DVD-RAM, or DVD-Video disc. When unmounted, they come out of your machine physically.

The term Disk is used for magnetic media such as hard drive (internal or external). A disk is always rewritable in nature and can be reused multiple times. Another characteristic that keeps it separate from discs is its nature to be further divided into multiple partition.

Not of very great use, but I am sure this post will add a little to the knowledge bank that most of us have.

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