I have referenced on my page the last version of their software that converts APFS to HFS+.
- Paragon Software today unveiled its free Retrofit Kit that allows users to access Apple File System (APFS) volumes on older versions of macOS and Mac OS X. It works with traditional spinning hard.
- Re: APFS Retrofit Kit for macOS funktioniert nicht!! Yes, I wish they would bring it back, I have 2 ssd drives, one with El Capitan and one with High Sierra. When I select startup disk from High Sierra to El Capitan, I can boot into El Capitan, but in.

When APFS was a ‘new thing’ I’ve installed on a couple of systems the APFS Retrofit Kit for macOS by Paragon Software. It permitted me to use a system with macOS from 10.10 to 10.12 and read an APFS-formatted HDD, SSD or flash drive.
Links to my page may give me compensation. It includes also NTFS conversion tools as well.
No guarantees it will work. However, you might find also that using the startup manager on an APFS system will allow you to load that as a separate partition. The Option key loads the startup manager at startup. Granted, you will want Mac OS 10.13 or later on an external hard drive if your existing APFS system not booting.


Dec 24, 2019 9:45 AM
Paragon Software releases the new, free APFS Retrofit Kit for macOS – a system driver which enables read-only access to APFS (Apple File System) volumes under macOS 10.12 or earlier versions. For Mac users working on legacy versions of Mac OS X and macOS where APFS is natively not supported, the tool allows instant, read-only access to APFS-formatted data stored on hard disk drives, solid-state storage, or flash thumb drives.

Once installed, the driver requires no additional interaction from the user. The software delivers:
- Stable Operation: Fail-safe operation across compatible hardware and software systems for general-purpose and specialized applications.
- Data Safety: Protection of data integrity, along with prevention of accidental data corruption or loss.
- Guaranteed Performance: Steady, balanced throughput with effective flow control, reduced overhead, and no data congestion.
- Efficient Use: Thrifty usage of processor, memory, and disk resources.
Availability:
Apfs Retrofit Kit
To download APFS Retrofit Kit for macOS, please visit https://www.paragon-software.com/business/apfs-kit-mac/ No registration is required.