# macOS High Sierra

> 14th major version of the macOS operating system

**Wikidata**: [Q30134996](https://www.wikidata.org/wiki/Q30134996)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/MacOS_High_Sierra)  
**Source**: https://4ort.xyz/entity/macos-high-sierra

## Summary
macOS High Sierra is the 14th major version of the macOS operating system developed by Apple Inc., released on September 25, 2017, and succeeded by macOS Mojave. It is based on the Darwin operating system and uses the Aqua graphical user interface toolkit.

## Key Facts
- It is the 14th major version of the macOS operating system.  
- Developed by Apple Inc., an American multinational technology company.  
- Follows macOS Sierra (13th version, 2016-09-20) and is succeeded by macOS Mojave (15th version, 2018-09-24).  
- Based on the Darwin operating system, which is open-source.  
- Published on September 25, 2017, with the stable version 10.13.  
- Named after the Sierra Nevada mountain range in the United States.  
- Uses the Aqua graphical user interface toolkit and is licensed under the Apple Public Source License.  
- Available via the Mac App Store for updates and security patches.  

## FAQs
### Q: When was macOS High Sierra released?
A: It was released on September 25, 2017, as the 14th major version of macOS.  

### Q: What are the key features of macOS High Sierra?
A: It introduced improved performance, enhanced security (including better privacy controls), and support for Apple File System (APFS) as the default storage format.  

### Q: What devices can run macOS High Sierra?
A: It is compatible with Apple computers that support macOS Sierra, such as the iMac Pro, and other Mac models that meet Apple’s hardware requirements.  

### Q: Is macOS High Sierra still supported?
A: Yes, Apple continues to release security updates for macOS High Sierra (e.g., 10.13.6 – Security Update 2020-006), though it is no longer the latest version.  

## Why It Matters
macOS High Sierra was a pivotal update in Apple’s macOS ecosystem, focusing on performance optimization and security enhancements. It marked a significant shift toward modern storage with the introduction of Apple File System (APFS), which improved data management and encryption. The update also refined the user experience with faster boot times and better integration with Apple’s ecosystem, including iCloud and services like Siri. For users, it represented a stable, feature-rich iteration that bridged the gap between older macOS versions and the more advanced features of later releases like macOS Mojave. Its emphasis on security and performance made it a reliable choice for both personal and professional use, solidifying Apple’s reputation for delivering robust operating systems.

## Notable For
- It was the first major macOS version to use Apple File System (APFS) as the default storage format, replacing the traditional HFS+ system.  
- Introduced significant performance improvements, including faster app launches and better memory management.  
- Enhanced security features, such as improved privacy controls and support for hardware-based encryption.  
- Named after a real-world geographic location (Sierra Nevada), a tradition continued in subsequent macOS versions.  
- Served as a foundational update for Apple’s transition to more modern macOS features, including the dark mode introduced in macOS Mojave.  

## Body
### Overview
macOS High Sierra is the 14th major iteration of the macOS operating system, developed by Apple Inc. It was released on September 25, 2017, and is part of the macOS series, which began with the first version in 2001.  

### Development and Release
macOS High Sierra follows macOS Sierra (13th version, 2016-09-20) and is succeeded by macOS Mojave (15th version, 2018-09-24). The development process involved Apple’s internal teams, leveraging the open-source Darwin kernel as the core foundation. The update was distributed exclusively via the Mac App Store, with subsequent versions (e.g., 10.13.5, 10.13.6) released as free security patches.  

### Technical Specifications
- **Version Numbers**: The stable release is 10.13, with subsequent updates including 10.13.5 (2018-06-01), 10.13.6 (2018-07-09), and 10.13.6 – Security Update 2020-006 (2020-11-12).  
- **GUI Toolkit**: Aqua, Apple’s classic graphical user interface, remained the primary toolkit.  
- **License**: Licensed under the Apple Public Source License, allowing for open-source contributions to the underlying Darwin code.  
- **Security Updates**: Multiple security patches were released, including 2020-002, 2020-003, and 2020-006, addressing vulnerabilities and enhancing system security.  

### Naming and Legacy
The name “High Sierra” is derived from the Sierra Nevada mountain range in the United States, a tradition that began with macOS Sierra (named after the Sierra Nevada mountain range). This naming convention reflects Apple’s focus on natural landscapes and user-friendly design.  

### Compatibility
macOS High Sierra is compatible with a range of Apple hardware, including the iMac Pro (all-in-one desktop) and other Mac models that support macOS Sierra. It requires specific hardware specifications, such as a compatible processor and sufficient RAM, to ensure optimal performance.  

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  "@type": "Thing",
  "name": "macOS High Sierra",
  "description": "14th major version of the macOS operating system",
  "url": "https://www.apple.com/macos/high-sierra/",
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## References

1. [Informationen zum Sicherheitsinhalt von macOS High Sierra 10.13. 2020](https://support.apple.com/de-de/HT208144)
2. [Laden - macOS High Sierra 10.13.5-Combo-Update (Deutsch). 2018](https://support.apple.com/kb/DL1965?viewlocale=de_DE&locale=de_DE)
3. [Informationen zum Sicherheitsinhalt von macOS High Sierra 10.13.6, vom Sicherheitsupdate 2018-004 Sierra und vom Sicherheitsupdate 2018-004 El Capitan. 2018](https://support.apple.com/de-de/HT208937)
4. [Sicherheitsupdate 2020-002 High Sierra. 2020](https://support.apple.com/de-de/HT211100)
5. [About the security content of macOS Catalina 10.15.5, Security Update 2020-003 Mojave, Security Update 2020-003 High Sierra. 2020](https://support.apple.com/de-de/HT211170)
6. [Informationen zum Sicherheitsinhalt des ergänzenden Updates für macOS Catalina 10.15.5 und Sicherheitsupdate 2020-003 für High Sierra. 2020](https://support.apple.com/de-de/HT211215)
7. [Source](https://support.apple.com/en-us/HT211946)