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Apple has unveiled the macOS 28 File System Compatibility Guide, explicitly announcing the discontinuation of support for the encrypted Mac OS Extended (HFS+) file system. To ensure seamless system upgrades, users are advised to either decrypt their HFS+ hard drives or convert them to the APFS format beforehand. Failure to do so may result in data inaccessibility post-upgrade. Since the release of macOS 26, Apple has been issuing compatibility alerts for external disks formatted with HFS+ encryption, urging users to carry out format conversions via 'Disk Utility'. This strategic move underscores Apple's commitment to advancing file system modernization, as the APFS format offers superior security, performance, and space management capabilities compared to its HFS+ predecessor.
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