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I'm trying to replace my Clover with OpenCore by following Vanilla Guide and stuck with "52:895 00:091 OCSMC: SmcReadValue Key 4D535463 Size 1" error for multiple days now. Tried many things but nothing seems to be working. Really appreciate your time and help to debug this problem.

Already tried slide=0 and 8 which I found from memory dump.

 

OpenCore V0.5.7

Machine: HP EliteDesk 800 G3

MB: Q270

Processor: i7-7700

 

Last boot message

52:895 00:091 OCSMC: SmcReadValue Key 4D535463 Size 1
52:979 00:084 OCSMC: SmcReadValue Key 4D534163 Size 2

Kexts used (removed them from EFI before uploading here) EFI.zip

Lilu.kext
SMCProcessor.kext
SMCSuperIO.kext
VirtualSMC.kext
WhateverGreen.kext

opencore-2020-03-28-201918.txt

EFI.zip

20 hours ago, MaLd0n said:

Really appreciate @MaLd0n for sharing the EFI folder and I was able to boot my system. Then, I did a diff, and two things which were blocking me was "AppleXcpmCfgLock" set to false in my case and setting it to true, get me pass SmcReadValue error and then blocked due to error in EC. When I replaced my SSDT-EC-USBX.aml with SSDT-OLARILA.aml, I was able to boot.

 

My EC device is as below and I'm currently using in clover to boot my Catalina system. Do you know why it's not working with OpenCore?

        Scope (\_SB.PCI0.LPCB)
        {
            Device (EC)
            {
                Name (_HID, "ACID0001")  // _HID: Hardware ID
                Method (_STA, 0, NotSerialized)  // _STA: Status
                {
                    If (_OSI ("Darwin"))
                    {
                        Return (0x0F)
                    }
                    Else
                    {
                        Return (Zero)
                    }
                }
            }
        }

 

 

Now, every time I reboot, I get following error. In Clover I've used FixRTC option to fix this and in OpenCore I tried following options but non of them seems to be working.

1. Used the kext: RTCMemoryFixup

2. Tried the Apple RTC patch

 

 

IMG_4797(1).thumb.JPG.1c8f665c6aa9a343f0967360e8a049b0.JPG

 

 

 

 

 

 

 

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