Lastly, re-enable System Integrity Protection. Reboot your Mac and hold Command+R while it’s booting to enter recovery mode. Launch a terminal in recovery mode and run the following command: csrutil enable. Once you have, reboot your Mac. NTFS-write support should be functioning now.

On my brand new Mac Mini - I tried to enable the NTFS FOR MAC extension, which requires a re-start. But it didn't start. Got as far as the very end of the white line, but would not get to the start page! So I tried SAFE MODE, assuming that works the same as in earlier OS systems (el capitan - holding the shift key down at startup) and to my disappointment, that did NOT work either. Gets to the end of the white line and then just hangs indefinitely. So what to do next?

I assume that there's a RECOVERY MODE on Mojave? I will try that next. That will take me to DISK UTIL, but once I am in DISK UTIL, what can I do? How can I tell it to disable the NTFS FOR MAC extension? I guess NTFS FOR MAC is NOT backward compatible, meaning that you can not use the current Mac OS with an older version of the extension. Or else why even bother to come up with an update to the extension?

Anyhow, my system is still hanging on startup, and also on Safe mode start up. Still have to try recovery mode. Will run DISK UTIL, although not sure if that will do any good. More likely will have to reinstall the whole OS! A new baby will always have growing pains.

Now if I can NOT start up in recovery mode then I am in trouble - will be officially out of ideas - does anyone know if APPLE CARE is open on Sunday? Post Merged, Dec 16, 2018 ---Rats!

Ten minutes later, I am NOT able to start, even in recovery mode. Again it hangs up as soon as the white line reaches the end. Nothing is happening after 10 minutes. Another possibility: I still have a back-up of my previous machine, saved on an external drive.

Why does adobe redear require login on my mac osx ?. Is there a way to boot directly into the external drive. (the external drive has a back-up of a user and a system in El Capitan 10.11.6. Will the Mini be able to boot using that OS?) ---- Still another update - the system does NOT seem to want to restart using any of these options basic 'normal' startup safe mode (shift key) command + R key or option key nothing seems to be working. Better call Apple. Hope that they'll help me with this.

Was on phone with Apple Care for about an hour, trying every possible way to startup, nothing worked, no combination of keys would get the Mini to actually startup (it always hangs after the white bar is finished loading.) 1. Worth trying! I actually do have a MacBook air running Mojave (my older desktop is a 2008 MacBook air running El Capitan 10.11.6) so I will use the MacBook to try and install Mojave on an external USB3 drive. (not sure what T2 settings are in this case.) although the problem is that I can't start no matter what so far. Ah thanks again! Very good to know. So to use an external drive as startup with the Mini, it would have to have a Mojave system installed.

Thanks for clarifying on both counts. Best usb c adapter for mac. PS: one last (hopefully) word: I have the old NTFS FOR MAC installed on my MacBook Air, running Mojave.

It does doesn't work. Instead, I get an error message saying it doesn't work and that I should pay and / or update (I actually did pay for it, it's not unlicensed, but that's another story). Anyhow, I figured that would be the worst that would happen with the Mini, also running Mojave, that I would just get the same error message. Little did I suspect it would completely crash the system, and prevent the Mac from starting up to begin with.

(the NTFS FOR MAC extension HAS to be the culprit - it's the only change I made before I restarted, or attempted to restart). Thanks again!

Also, you can re-install macOS Mojave on your internal drive from scratch, for that you don't need external drive - only 16gb USB stick (preferably USB 3.1 or 3.0): How to Make a Bootable MacOS Mojave Installer Drive UPDATE: When your Mac Mini 2018 is fully restored, it would be wise not to install any high risk software on internal drive - instead for testing and using such software you can install Mojave on external drive and boot from it as required, or install Mojave or some previous macOS version in VM (under VirtualBox, or Parallels, or VMware Workstation). So far no good. It won't start no matter what. I didn't try booting from a little flash drive, however.