- Joined
- Mar 3, 2011
- Messages
- 10
- Motherboard
- GigaByte GA-Z170X-UD5 TH
- CPU
- Skylake 6700K
- Graphics
- PNY GeForce GTX-970
- Mac
- Mobile Phone
Automatic APFS conversion outside of the installer seems rather unlikely (Internet FUD).
Converting requires doing so from a recovery environment and usually doesn't work anyway.
But the installer itself can be used reliably to convert to APFS if you didn't do it at upgrade time (startosinstall --converttoapfs YES).
So I have a mid-2010 MacBook Pro whose lifespan I extended with a Samsung 850 PRO. I did a clean High Sierra install on it shortly after the High Sierra was officially released. Got an APFS, and as Millennials would say, OMG. It was as if I had put a 4800 RPM HDD in. So after two days, I repeated a clean install (after a Linux 'hdparm' secure-erase of the SSD), this time disabling the APFS conversion during the High Sierra install. Things were fine, and then 10.13.1 was released. The update took a LOOOONG time, and I mean *after* the download and reboot were done.
Then I accidentally stumbled on the "/var/log/hfs_convert.log" (attached). Looks like the filesystem was converted. Command-line 'diskutil' as well as the GUI version insist it's still a journaling HFS+. System isn't as slow as it was with 10.13.0.
The log file also says conversion took four (4) seconds? Insert the X-Files theme music here...