HFS Plus

HFS Plus (Hierarchical File System Plus) is a file system developed by Apple Inc. for macOS and other Apple operating systems, serving as an enhanced successor to the original HFS. It supports larger file sizes (up to 8 exabytes), improved Unicode support for file names, and advanced features like journaling for data integrity. Primarily used on macOS devices, it organizes and manages data storage on disks, including hard drives and SSDs.

Also known as: HFS+, Mac OS Extended, HFS Extended, Hierarchical File System Plus, HFSX

Why learn HFS Plus?

Developers should learn about HFS Plus when working with macOS systems, particularly for tasks involving file system management, data recovery, or cross-platform compatibility. It is essential for understanding macOS storage architecture, debugging file-related issues, or developing applications that interact with the file system on Apple devices. Knowledge is also useful for system administrators managing macOS servers or for forensic analysis in security contexts.

Learning Resources

• docs: Apple Developer Documentation: HFS Plus
• docs: Wikipedia: HFS Plus
• tutorial: OS X Daily: HFS+ vs APFS
• course: Udemy: macOS File Systems Course