macOS High Sierra: A Solid Foundation for the Future
macOS High Sierra, launched on September 25, 2017, built upon the foundation laid by its predecessor, macOS Sierra. While its name suggested an iterative upgrade, High Sierra introduced several under-the-hood advancements and refinements aimed at improving performance, reliability, and efficiency. Named after the high-elevation region of the Sierra Nevada mountains, this release symbolized a focus on stability and optimization.
Apple File System (APFS): A Revolutionary Change
One of the most significant updates in macOS High Sierra was the introduction of the Apple File System (APFS). Designed to replace the decades-old HFS+ file system, APFS brought several benefits:
1. Enhanced Performance: APFS provided faster file duplication and improved system responsiveness, particularly on devices equipped with solid-state drives (SSDs). Users experienced quicker boot times and more efficient file management.
2. Improved Data Integrity and Security: The new file system offered built-in encryption, crash-safe protections, and improved support for large files, making it both secure and robust.
3. Optimized Storage: APFS introduced space-sharing, allowing multiple file systems to share the same physical storage space dynamically. This feature improved storage efficiency and flexibility.
Graphics and Video Enhancements
macOS High Sierra included substantial improvements to graphics and video technologies:
1. Metal 2: The updated Metal 2 graphics API offered better performance for games, professional applications, and machine learning tasks. It also introduced support for external GPUs (eGPUs), catering to power users and developers.
2. High Efficiency Video Coding (HEVC): High Sierra added support for HEVC (H.265), a next-generation video compression standard. HEVC reduced file sizes for 4K video content without compromising quality, making it easier to store and stream high-resolution media.
3. Virtual Reality Support: With High Sierra, macOS gained support for VR content creation, enabling developers to build immersive experiences using tools like SteamVR and the HTC Vive.
Safari: Smarter and More Secure
Safari in macOS High Sierra became faster and introduced new privacy-focused features:
1. Intelligent Tracking Prevention: Safari used machine learning to identify and block cross-site tracking, protecting users from invasive ads and preserving their privacy.
2. Autoplay Blocking: The browser automatically prevented videos from playing with sound unless users explicitly allowed them, enhancing the browsing experience.
3. Custom Website Settings: Users could configure individual settings for specific websites, such as enabling content blockers or adjusting zoom levels.
Photos App: Expanded Features
The Photos app in High Sierra received a major overhaul, adding new tools and organizational capabilities:
1. Persistent Sidebar: A new sidebar provided easy access to albums, projects, and editing tools, streamlining navigation.
2. Advanced Editing Tools: Photos introduced features like Curves for precise tonal adjustments and selective color editing, giving users greater control over their images.
3. Third-Party Extensions: High Sierra allowed integration with third-party editing tools, enabling users to access additional features without leaving the app.
Mail and Notes Enhancements
1. Mail App Improvements: High Sierra optimized the Mail app, reducing the storage space required for email messages. A new Top Hits feature prioritized search results, helping users find relevant emails quickly.
2. Notes App Upgrades: The Notes app added support for tables, allowing users to organize information in a structured format. Pinned notes ensured that important information remained easily accessible.
Additional Features and Refinements
1. iCloud File Sharing: High Sierra introduced file sharing through iCloud Drive, enabling users to collaborate on documents and projects effortlessly.
2. FaceTime Improvements: Users could capture Live Photos during FaceTime calls, preserving memorable moments with friends and family.
3. Siri Updates: Siri gained a more natural voice and expanded functionality, including the ability to play music from Apple Music playlists based on user preferences.
Security and Privacy Enhancements
High Sierra emphasized security and privacy with features such as:
1. Enhanced Gatekeeper Protections: Gatekeeper offered stricter safeguards against unauthorized apps, ensuring that only trusted software could run on the system.
2. Secure Boot and System Integrity Protection: These measures safeguarded the system against malicious attacks and unauthorized modifications.
3. Privacy Enhancements: High Sierra included granular controls for app permissions, giving users more transparency and control over their data.
System Requirements and Compatibility
macOS High Sierra maintained compatibility with Macs introduced in mid-2010 or later. While it required 2 GB of RAM and 14.3 GB of available storage, certain features, such as HEVC and Metal 2, were optimized for newer hardware.
Legacy and Reception
macOS High Sierra was praised for its focus on refinement and stability. By introducing APFS, Metal 2, and HEVC, it laid the groundwork for future innovations in macOS. While some users viewed it as an incremental update, its emphasis on performance and security ensured a smooth and reliable experience for both casual users and professionals.
High Sierra’s legacy endures as a release that prioritized foundational improvements, setting the stage for more ambitious changes in subsequent macOS versions.
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