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I've updated a iMac from Sierra to High Sierra and the file system has converted the main flash storage drive from HFS+ to APFS. Is there way to revert back to HFS+ so that Deep Freeze will work without having reinstall all of the programs and apps on this machine?
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I've updated a iMac from Sierra to High Sierra and the file system has converted the main flash storage drive from HFS+ to APFS. Is there way to revert back to HFS+ so that Deep Freeze will work without having reinstall all of the programs and apps on this machine?

Revert to HFS+ from APFS

Apple's early computers ran on a variety of operating systems, including a Pascal version and one based on CP/M, before releasing its ProDOS with the advent of its 16-bit computer. With the release of the Lisa, which had its own OS, Apple and computing entered the graphical age; it was followed by the Macintosh, which offered a series of "System" operating systems. Other Mac operating systems included PowerPC until Apple acquired NeXT and folded it into the Mac OS. Current operating systems for Apple devices are Mac OS-X and iOS.