High Sierra may refer to any of the following:

  1. High Sierra is a standard developed for CD-ROM drives agreed to by manufacturers at the High Sierra Hotel & Casino in Lake Tahoe, CA. This standard in incorporated into operating systems including MS-DOS, Windows, Unix, Macintosh, and others. Today, the High Sierra standard is known as ISO 9660.

  2. High Sierra is the codename of Apple macOS X 10.13, introduced at the WWDC on June 5, 2017.

  • CD-ROM help and support.

CD terms, ISO