X79 Dual Xeon 2689 Catalina

[Hai Ngo 0]

I'm trying to install macOS on my X79 rigs which are bought from Aliexpress and having some issues:

1. I cannot boot without the flag cpus=1 as I always endup with a memory panic message.
2. If I boot with flag cpus=1, it takes quite long to boot into Installation screen. After reboot from the installation (I'm trying to make an internet installation), I cannot pass the apple logo screen with the text "Estimating time remaining" which seems to last forever.

Could you give me some suggestion to boot the without flag cpus=1? I'm suspecting it's causing the long lasting "Estimating time remaining" message and my pc possibly won't run at full speed if the macOS installation succeeds (I'm using 2 cpu Xeon E5 2689)

Here is details about my rigs:

• Mobo: Chinsese X79 dual CPU
• CPU: Xeon E5 2689 x2
• GPU: Gigabyte RX 580 8GB
• Ram: 4 x 8GB 1333Mhz

Here is some of my BIOS settings:

• Legacy USB Support: [Enabled]
• XHCI Hand-off: [Enabled]
• EHCI Hand-off: [Enabled]
• Hyper-threading: [Enabled]
• Active Processor Cores: [All]
• Serial Port: [Disabled]
• Intel(R) VT-d : [Disabled]
• Launch CSM: [Enabled]
• Boot option filter: [UEFI only]
• Launch Storage OpROM policy : [UEFI only]
• Launch Video OpROM policy : [UEFI only]

My EFI folder is in the attachment

EFI.7z

Edited August 9, 2020 by Hai Ngo

[MaLd0n 1,001,047]

DSDT.aml.zip

[Hai Ngo 0]

54 minutes ago, MaLd0n said:

DSDT.aml.zip 10.31 kB · 1 download

I've overwritten your file and removed cpus=1 flag, now the memory panic is gone but I get the prohibited sign with broken texts on the screens.

[MaLd0n 1,001,047]

remove usbinjectall

sata as ahci

use usb 2 port

[Hai Ngo 0]

18 hours ago, MaLd0n said:

remove usbinjectall

sata as ahci

use usb 2 port

I've already used usb 2.0 port and sata has already be set to AHCI. I've just removed usbinjectall kext and the prohibited sign still appears

[Hai Ngo 0]

I still cannot boot into macOS installation in USB. Here are screenshots before the prohibited sign appeared with and without Usbinjectall 

Could you give me some suggestions to fix this issue?

@MaLd0n Could you tell me how did you get the DSDT file you gave me? It fixed the my memory panic issue so an explanation will be useful later I believe

[MaLd0n 1,001,047]

no idea what happens

i just apply a essentials patches for this chipset

[anerik70 0]

On 8/11/2020 at 9:35 PM, MaLd0n said:

no idea what happens

i just apply a essentials patches for this chipset

Where can I get those essentials patches?

[Schmaxel Highland 0]

i hAVE THE SAME PROBLEM!!!!

[MaLd0n 1,001,047]

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