Revert to HFS+ from APFS

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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Dmitri FarafontovLinux Systems AdminCommented:
Nope. Backup. Reinstall. Format HFS. If you are command line friendly check this out:

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LOGTECHSERVAuthor Commented:
If I back it up, does that back up the programs as well? And will it restore from an APFS to a reformatted HFP+ drive after re installation?
Dmitri FarafontovLinux Systems AdminCommented:
You can try something like CarbonCopy or SuperDupr! to create your backup to a separate drive and see if it boots up.
Dmitri FarafontovLinux Systems AdminCommented:
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