You cannot use this EFI as it is.
At least you have to change your Serial Number, which is located in EFI/OC/config.plist
, search for PlatformInfo
, look for keys: MLB
, ROM
, SystemSerialNumber
, SystemUUID
. It’s super easy, more on that in Dortania‘s guide.
Maybe you have to check for other things, if you have different hardware, e.g. iGPU instead of dGPU. Don’t hesitate to ask if you have any questions.
- Guide Used: OpenCore Desktop Guide
- Installation Date: Mar 7, 2020
- Open Core: 0.6.3
f152c95
released on Nov 2, 2020 — Sanity Check Result - macOS Catalina, v.10.15.7
19H2
updated on Sep 26, 2020 - SMBIOS: iMac14,2
- MB GA-Z87MX-D3H @ BIOS F6 (of F7)
- CPU Intel Core i7-4770 4C/8T @ 3.4 GHz
- iGPU Intel HD Graphics 4600
- dGPU Sapphire Radeon RX 580 4 GB
- RAM 16 GB 1866 MHz DDR3
- Audio Codec Realtek ALC892
- Ethernet
00:00:00:00:00:00
I217-V from Intel - Wi-Fi + Bluetooth
00:00:00:00:00:00
BCM43602 802.11ac
- AppleALC
- IntelMausi
- Lilu
- SMCProcessor
- SMCSuperIO
- VirtualSMC
- USBInjectAll
- WhateverGreen
Model: iMac14,2
Board ID: Mac-2700000000000000
FW Version: 141.0.0.0.0
Hardware UUID: 00000000-0000-0000-0000-000000000000
Serial Number: 000000000000
Country: D25 - Unknown
Year: N - 2014
Week: V - 50 (10.12.2014-16.12.2014)
Line: 000 - 000 (copy 1)
Model: 0000 - iMac14,2
SystemModel: iMac (27-inch, Late 2013)
Valid: Possibly
System ID: 00000000-0000-0000-0000-000000000000
ROM: 000000000000
MLB: 00000000000000000
- Home/Performance: Defaults
- Performance/Frequency: Defaults
- Performance/Memory: System Memory Multiplier is 18.66
- System: Defaults
All defaults
- OS Type: Windows 8
Disable:
- Fast Boot
Enable:
- Internal Graphics Memory Size: 64M
- DVMT Pre-Allocated (iGPU Memory): MAX
- EHCI Hand-off Enabled
Disable:
- Fast Boot
- VT-d (can be enabled if you set DisableIoMapper to YES)
- CSM
- Intel SGX
- Intel Platform Trust
Enable:
- VT-x
- Above 4G decoding
- Hyper-Threading
- Execute Disable Bit
- EHCI/XHCI Hand-off
- OS type: Windows 8.1/10 UEFI Mode
- DVMT Pre-Allocated (iGPU Memory): 64MB
Disable
- Thunderbolt
- CFG Lock
Enable
- VT-x
- Above 4G decoding
- Hyper Threading
- Execute Disable Bit