Your assistance is deeply appreciated cmn699.
I am pretty certain that the clover zip file that I updated is the one taken from the High Sierra USB drive. However I also saved a backup copy of the /EFI folder on the original Sierra hard drive. Unfortunately I think I took this back up after my first attempt to direct upgrade Sierra to High Sierra. I tell you this in case I inadvertently provided you with this file rather than the generic clover from the USB drive. I wouldn't want to be wasting your time having you look at files that are not really relevant.
With regard to the errors that you have identified - are these due to problems with UniBeast or associate with the way in which I created the install drive?
Also I'll check the BIOS options once more. Are there any particular settings that need to be configured as compared with those used for Sierra?
Thanks much!
With regard to the errors that you have identified - are these due to problems with UniBeast or associate with the way in which I created the install drive?
The problem is with CLOVER.
If you used Unibeast to create your USB installer disk , the CLOVER is installed in the USB's EFI partition by Unibeast automatically after copying the system files from the Downloaded High Sierra Installer file in the Applications folder. Even so, we need to check CLOVER , specifically the contents of kexts/Other and drivers64UEFI folders and the config.pist that makes use of these two folder contents to provide the bootloader the required support and guidance during the boot along with BIOS options for our specific Motherboard.
Unibeast is is a general tool useful for most of the hardware but not for all.
AsRock boards are not like GigaByte ; The latter is more friendly in hackintosh build.
If you had made the USB installer manually using Terminal Command and then installed CLOVER separately by downloading it from Sourceforge.next, then you have more responsibility to check every step.
I am pretty certain that the clover zip file that I updated is the one taken from the High Sierra USB drive. However I also saved a backup copy of the /EFI folder on the original Sierra hard drive. Unfortunately I think I took this back up after my first attempt to direct upgrade Sierra to High Sierra. I tell you this in case I inadvertently provided you with this file rather than the generic clover from the USB drive
The Verbose boot screen error shown can be caused by the lack of FixOwnership in USB device properties of your config.plist.
I have also noted omissions related to Graphics but your Verbose boot has not progressed to that stage to show those problems. That is what I was alluding to in my previous post about further problems even when you can boot from this stage once you edit the Config.plist>Devices as suggested, provided your BIOS USB options also are OK.
Since you have raised a slight doubt that the CLOVER can be from a different source,I will edit the rest and upload only if you have further problem after using the suggested change.
Are there any particular settings that need to be configured as compared with those used for Sierra?
Each motherboard may differ in the BIOS menu display . I am more familiar with Gigabyte and I have never owned an AsRock and don't know how its BIOS menu options are arranged or manipulated. I suggest the following:
- USB controllers must be enabled in the BIOS .
- To use Integrated Graphics, Primary Display must be IGFX and DVMT-Pre-Allocated Memory must be set at 64M or preferably at 128M.
- Your UEFI USB installer must be First boot device. DISABLE any other devices in Boot Option Priorities list.
- Select UEFI options for the drive not Legacy.
Both Sierra and High Sierra use identical BIOS options. Having said that , anytime boot problem occurs or repeated attempts are made to Force reboot a PC, BIOS CMOS corruptions can occur and we need to check BIOS before rebooting.