Always a white screen ending installation ;-(

[MacArthur]

Hi all,

I have been trying so many times to install Catalina without success. I am not a pro but can follow tutorials... and this is what I did, unsuccessfully.
I have Mojave working 100% fine on a SSD and I try to install Catalina on another SSD.

First I suspected that some BIOS issue could be the problem.

Here is a comparison of my Mojave BIOS setup and Catalina BIOS setup, as seen on some topics:

1. Save & Exit → Load Optimized Defaults
2. M.I.T. → Advanced Memory Settings Extreme Memory Profile(X.M.P.) : Profile1 (Catalina) Disabled (Mojave)
3. BIOS → Fast Boot : Disabled (Both configurations)
4. BIOS → LAN PXE Boot Option ROM : Disabled (Both configurations)
5. BIOS → Storage Boot Option Control : UEFI (Both configurations)
6. Peripherals → Trusted Computing → Security Device Support : Disable (Catalina) Enable (Mojave)
7. Peripherals → Network Stack Configuration → Network Stack : Disabled (Both configurations)
8. Peripherals → USB Configuration → Legacy USB Support : Auto (Both configurations)
9. Peripherals → USB Configuration → XHCI Hand-off : Enabled (Catalina) (Disabled) Mojave
10. Chipset → Vt-d : Disabled (Catalina) Enabled (Mojave)
11. Chipset → Wake on LAN Enable : Disabled (Catalina) Enabled (Mojave)
12. Chipset → IOAPIC 24-119 Entries : Enabled (Both configurations)

1. Booting to install Catalina from both BIOS set up fail at the end with a white screen, although it seems that install is going fine with multiple reboots along the install process and my SSD being partitionned in 2 (Catalina and Data)... Any comment on that initial stage?

2. Regarding kexts I added Fake SMC, Lilu, USBInject all and WhateverGreen. All are latest version downloaded.

3. Here is enclosed my config.plist.

Any advice would be highly appreciated as I currently really don't know anymore what should I do ...

Cheers ;-)

 

[P1LGRIM]

Any advice would be highly appreciated

Not a guide, moved to Desktop Support.

 

[MacArthur]

Not a guide, moved to Desktop Support.

Oups, sorry for the mistake...

 

[cmn699]

Oups, sorry for the mistake...

The config.plist SMBIOS is blank.
Once you reach Clover Boot Manager (CBM) Screen on reboot, scroll down to Options_SMBIOS and type in Product Name: iMac 14,2 or 18,1 and then >Esc >CBM Screen and boot the USB installer and see if the Display issue is gone. In that case the problem is from config.plist_SMBIOS being blank and the current fix is temporary and should be done on each reboot during the installation ( there will be 2-4 reboots).

If you don't want to shut down and edit your macOSCatalina Beta USB installer's CLOVER/config.plist now, you can finish the installation but, for that on each reboot, you have to do the temporary fix in CBM screen _Options_SMBIOS