Seven years ago, on 27 March 2017, Apple introduced one of the most fundamental changes in its operating systems since Mac OS X 10.0 Cheetah was released 16 years earlier. On that day, those who updated iOS to version 10.3 had their iPhone’s storage silently converted to the first release of Apple File System, APFS. Six months later, with the release of macOS 10.13 High Sierra on 25 September, Mac users followed suit. At the time, these were huge gambles. The potential for disaster was significa...