Staying with High Sierra, though, loses you a lot. Setting up many apps for the first time can get tedious, but once they are registered with the right access in the Security & Privacy pane, few cause further trouble. For the great majority of users, this needn’t be as much of a pain as has often been claimed. Some enthusiasts have apparently managed to get Mojave to boot from HFS+, but that’s unsupported and likely to break.įor many High Sierra users, another attraction of staying put is Mojave’s privacy protection. One way to address this is to start up in Mojave or later from an external SSD. If your Mac is stuck having to do that, then you won’t be able to upgrade to Mojave without suffering a significant performance hit, resulting from the severe fragmentation which APFS seems to produce. It’s officially the last version of macOS which is able to boot from an HFS+ volume. There’s one situation in which High Sierra can be an advantage: if your Mac starts up from an internal hard disk. For instance, High Sierra has no support for the firmlinks on which 10.15 and 11.0 startup Volume Groups depend, and it looks likely that Big Sur’s backups to APFS may also depend on features in APFS which aren’t compatible with High Sierra. The current version in Catalina 10.15.6 is 1412.141.1, which gives you an idea of how much it has changed. The last version of APFS released in the 10.13.6 update was 748.51.0, which had no support for Fusion Drives. The major new feature of High Sierra was of course the first release version of APFS. Thus, on the release of Big Sur, macOS High Sierra will become unsupported. When Big Sur is released, between September and November this year, it will take the lead with full updates, with security updates only for 10.15 and 10.14. Under that practice, at present Apple provides full updates for macOS 10.15, and security updates for 10.14 and 10.13. Although many of us have searched for this policy in writing and been unable to find it, that is the way that macOS support works. If your Mac is still starting up in High Sierra, now is the time to plan your upgrade.įor many years, Apple has operated a policy whereby it provides full support for the current major release of macOS, plus security updates for the two previous major releases. In the next couple of months, Apple is expected to discontinue releasing security updates for macOS 10.13 High Sierra.
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