Thanks for your help.
kext added, but the microSD drive made a very strange noise (like Floppy drives in the old days...) and the microSD card wasn't recognized.
I'll make another try when I get back home with another microSD card.
Everything is working fine.
@Leesureone you're the best!
My purpose was to update from macOS Mojave 10.14.2 to macOS Mojave 10.14.6, is there any risk now that my system is up to date?
Now that my system is broken, I don't know how to update Clover bootloader from USB stick (which is not working any more...).
It seems I have to run the entire process allover again...
Edit: I didn't find an EFI folder in the attached file in post #430, only APPLE, BOOT and CLOVER folders...
I updated the BIOS to version 77, and when booting, the bar under the Apple logo was advancing indefinitely and nothing happened afterwards (no prompt)...
I tried to go back to version 56 (which was the previous version), but it's not possible anymore.
I verified the different settings...
The guy who wrote this guide (who took several days from his one-week Christmas Hollidays and has who was new to Hackintosh):
- read two different guides from @RehabMan and tried to make a mix of it specifically for his NUC
- tested different Bios settings to be sure it was working