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Permission issue. Run this in terminal sudo chmod -Rf 755 /L*/E* sudo chown -Rf 0:0 /L*/E* sudo touch -f /L*/E* sudo chmod -Rf 755 /S*/L*/E* sudo chown -Rf 0:0 /S*/L*/E* sudo touch -f /S*/L*/E* sudo kextcache -Boot -U /

1) To fix boot issue, go to BIOS, enable Legacy Option ROMs 2) Best to install internal wifi - DW1560 is my recommendation 3) In Config file, under Boot, change Default Boot Volume to what you name your MacOS SSD (case sensitive I think). 4) Right click "install MacOS High Sierra.app" , select show package contents Go to Contents/SharedSupport, mount BaseSystem.dmg Go to /S/L/E, grab AppleHDA and replace it back to your running MacOS /S/L/E folder Repair permissions and rebuild cache

You forgot to mention it has discrete graphics as well. Your system is not Kabylake, not sure why you have MBP 15,2 as SMBIOS. So you have no graphics acceleration. Remove these from /S/L/E FakeSMC AppleIntelE1000 VoodooHDA realtechALC AppleHDA AppleIGB Replace the bootpack from here , goes into /EFI/Clover Also the SSDT-Disable-DGPU.aml goes into /EFI/Clover/ACPI/Patched Restore vanilla AppleHDA.kext from USB installer to /S/L/E You might need to add HFSPlus.efi into /EFI/Clover/drivers64UEFI Repair permissions and rebuild cache