Drive - Discs (optical media)

Hierachy Storage


A disc refers to optical media, such as an audio CD, CD-ROM, DVD-ROM, DVD-RAM, or DVD-Video disc. Some discs are read-only (ROM), others allow you to burn content (write files) to the disc once (such as a CD-R or DVD-R, unless you do a multi-session burn), and some can be erased and rewritten over many times (such as CD-RW, DVD-RW, and DVD-RAM discs).

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 disc is not a Disk.

This cd-rom can hold more information than all of the paper that's here below me Bill Gates Cd Rom

Documentation / Reference

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A disk is a storage device that refers to magnetic media, such as: a floppy disk, the disk in your computer's hard drive, an external hard drive. It's also known as mass storage device. Disks...
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Secondary Storage - CD-ROM

The CD-ROM is a secondary storage medium. See

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