Conversion to APFS for magnetic drives can be done after the fact with Disk Utility, though there is not yet much data on how well APFS works on traditional hard drives. It will also only convert the boot partition and leave any other partitions unchanged. On installation, High Sierra will only automatically convert SSD or flash drives to APFS. APFS has already seen significant use in iOS 10.3 devices, but this is the first time that the new file system is being implemented on a large scale for macOS devices.ĪPFS has some significant improvements to the HFS+ file system, including but not limited to support for encryption at both the file and the volume level, being optimized specifically for SSDs, the ability to address far more files on a single drive, and much faster duplication of data. The largest and most significant change in High Sierra is the move from the aging HFS+ (Hierarchical File System Plus) file system first introduced in 1998 to the newer APFS (Apple File System) file system.
However, several significant technical changes deserve mention. The user interface of the OS remains mostly untouched. On the surface, Sierra is even more of an incremental improvement to macOS 10.12 Sierra than Sierra was to macOS 10.11 El Capitan. As with previous iterations of the Macintosh OS, it is a no-charge upgrade to any compatible Mac. High Sierra is compatible with any Macintosh that can run Sierra (macOS 10.12). Original announcement: On Monday, September 25, 2017, Apple released version 10.13 of the Macintosh operating system, High Sierra.
MACOS HIGH SIERRA 10.13.1 INSTALL
Novemupdate: for users who installed macOS High Sierra 10.13.1, please install an important security update to address a root access vulnerability as soon as possible. Systems incapable of running macOS 10.14.x or later-now at least five years old and generally more than eight years old- should be considered for retirement.
MACOS HIGH SIERRA 10.13.1 PATCH
Novemupdate: given Apple’s usual support practices, the security patch released in September 2020 for macOS 10.13.x was likely the final one they will make available.
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