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High Sierra Format

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Title: High Sierra Format  
Author: World Heritage Encyclopedia
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Subject: ISO 9660, High Sierra, HSF, Optical disc authoring, Files-11
Collection: Disk File Systems, Optical Disc Authoring
Publisher: World Heritage Encyclopedia

High Sierra Format

High Sierra Format (HSF) is the early logical file system used for CD-ROMs. The ISO 9660 standard is based on revised HSF.

Hard Rock Hotel and Casino) near Lake Tahoe, California.[1] This group became known as the High Sierra Group.

Present at the meeting were representatives from the following companies:

The meeting report was released in May 1986 and the High Sierra Group proposal was submitted to ECMA. This led to the issue of the ECMA-119 standard in December 1986, later adopted as ISO 9660. [2][3][4]

HSF was built upon the Yellow Book CD-ROM standard for data CDs, which itself was so open ended it would otherwise lead to diversification and creation of many incompatible data storage methods.

The creation of ISO 9660 was needed because the HSF was geared primarily towards the needs of the US market. The international extensions are the bulk of the differences between the formats.

The High Sierra Format was mainly used in the United States. The ISO 9660 format is used globally. Currently, High Sierra Format CD-ROMs are rarely encountered.


  1. ^  
  2. ^ "Standard ECMA-119". 
  3. ^ "The Invention of Compact Discs". 
  4. ^ "Chip's CD Media Resource Center: CD-ROM page 6". 
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