- If you had clicked the disk without UEFI prefix from F-12 Screen , that might be the problem.
- If you had selected and clicked the UEFI USB Installer from F-12 Boot Device Selection screen and then getting a Clover Boot Manager (CBM) screen without the USB installer icon as shown in the edited composite image, I am sorry, you need to create a new USB installer Flash disk
- Don't use current Unibeast to create the Installer without the suggested troubleshoot : Can cause missing USB in CBM problem
- Don't use the previous Clover EFI 4411 from Sourceforge.net as stand alone Clover EFI Bootloader.: same as above
- Best to Partition and format a 16GB Flash disk with good flashing LED indicator in a RealMac's Disk Utility with GPT+HFS+J options to Partition and Format it and accepting the default name "Untitled".
- Use CreateInstallMedia command on the Terminal using a genuine Install macOS High Sierra file from App Store.
- Check shasum using terminal command if you have any doubt about the HS Installer in the Applications Folder:
- shasum /Applications/Install*OS*.app/Contents/SharedSupport/InstallESD.dmg
- Wait a couple of minutes for a long alphanumeric string output.
- Right click that and Search with Google to identify the associated macOS High Sierra and Version number of a genuine and full software download.
Run CreateInstalMedia cmd :
sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/
Untitled --applicationpath /Applications/Install\ macOS\ High\ Sierra.app
- Download Clover EFI from RehabMan Bucket Clover_v2.4k_r4423.RM-4614.cf0897a3.zip
- Use the unzipped Clover EFI to install on the newly created macOS High Sierra Installer choosing "Customize" and top two options for UEFI in the next pop (Not the default Legacy) and then in drivers64UEFI > select OsxAptioFix2Drv-64.efi and then click Install
- The EFI partition will be Automatically mounted on the Desktop for the FIRST and ONLY time as a white icon just like the white icon of USB installer Disk.
- Click open EFI to Blue EFI Folder and inside that CLOVER Folder and then inside that find kexts/Other
- Copy and Paste essential kexts like the latest FakeSMC.kext from RehabMan , your Ethernet kext from RehabMan or Tonymac Downloads .
- I would recommend editing config.plist from within CLOVER using Clover Configurator (Vibrant Edition) (CCV) to go to each menu from its LEFT panel but don't forget particularly Boot and Arguments select [√] Verbose (v) ;[√]dart=0 nv_disable=1
- Go to Devices > USB section [√]Inject [√] Add ClockID [√]FixOwnership
- RT Variables > CsrActiveConfig +0x67 [ located at Far Right Top corner]
- SMBIOS Product Name :iMac14,2
- Save the selected options using the 2nd arrow at the bottom left panel
- Try using the above created USB installer .
Your BIOS options have some errors [See edited images]