Upgrade from Mavericks failed

[EliteMacx86]

Following this guide I finally managed to reach the High Sierra installer and installed a test system on an external SSD. It was possible to boot into it despite of a lot of error messages. WiFi, Sound and brightness didn't work, so I put these kexts into the EFI:
AppleALC
BrightnessKeys
SMCLightSensor
VoodooPS2Controller
IO8021HighSierra
SMCBatteryManager

That was apparently some too many, because I got a kernel panic because of Evoreboot that had been migrated with other files from Mavericks. Even after removing this kext which is incompatible with High Sierra the kernel panic appeared again with the same message. What kexts are really needed?

I can't upgrade from Mavericks before I'm sure everything will work.

HD 3000 has a native support on High Sierra and rest should be functional as well. You don't need the IO8021HighSierra. Also, before you upgrade, ensure you have a sufficient backup.

 

[EliteMacx86]

I risked installing High Sierra to the internal drive, of course after creating a new backup. But I could not boot into it because of the same error, should have deleted EvOreboot first. After many attempts I was able to boot into the external system again, in save mode, and deleted EvOreboot from the internal drive. Now I can boot into the upgraded system, but only in safe mode. There are still some old kexts to remove.

Attach the EFI to check.