EFI miniforums UM700

[jacklogan]

Any one can help me with EFI for my miniforums UM700? I want install SEQUOIA 15.5.

 

[Edhawk]

Confirm the specifications of the system, so we can see if it will run macOS and which patches are required.

 

[jacklogan]

Good morning and thank you for your reply. The characteristics of the mini pc are:

AMD Ryzen 7 3750H , 4 Cores 8 Threads, (Frequenza base 2,3 GHz, fino a 4,0 GHz)
Radeon RX Vega 10 Graphics (Frequenza grafica 1400 MHz)
DDR4 8GB×2 (SODIMM Slots×2)
M.2 2280 256GB PCIe SSD
Dual WIFI , BT5.1
RJ45 Port×1 , USB3.0 Port×1, USB3.1 Port×3, USB-C Port×1 , Digital MIC×1
HDMI 2.0(4K@60Hz)，DisplayPort(4K@60Hz) , USB-C Port(4K@60Hz)

I hope that's enough information

 

[jacklogan]

Main Chipsets of the MinisForum UM700​

1. CPU Chipset​

• AMD Ryzen 7 3750H:
  • Integrates the DDR4 memory controller (dual-channel) and the Radeon RX Vega 10 GPU.
  • Directly handles many functionalities, such as:
    • Communication with DDR4 RAM.
    • Video output via HDMI, DisplayPort, and USB-C.
    • Hardware acceleration for graphics and video.
    • PCIe 3.0 lanes for connecting NVMe SSDs and other peripherals.

2. Network Controller​

• LAN Ethernet:
  • Realtek RTL8125or similar (depending on the hardware revision):
    • Supports speeds up to 2.5 Gbps.
    • Dual Ethernet ports for advanced setups (e.g., link aggregation or use as a router/firewall).
• Wi-Fi and Bluetooth:
  • Intel AX200 or AMD RZ608module (depending on configuration):
    • Wi-Fi 6 (802.11ax) for high-speed wireless connections.
    • Bluetooth 5.1 for connecting wireless peripherals.

3. USB Controller​

• USB Controller:
  • Managed by the chip integrated into the Ryzen 7 3750H CPU, supporting:
    • 4 USB 3.1 Gen 2 ports (10 Gbps).
    • 1 USB-C port with support for data, video, and charging.
  • Some configurations may include an additional USB hub to manage more ports.

4. Audio Controller​

• Realtek ALC233or similar:
  • Integrated HD audio chip.
  • Supports stereo audio output via a 3.5mm jack.
  • Compatible with combo headphones and microphones.

5. Storage Controller​

• NVMe SSD:
  • PCIe 3.0 x4 connectivity managed directly by the CPU.
  • Supports M.2 2280 SSDs (NVMe or SATA).
• HDD/SSD SATA:
  • Managed by an integrated SATA controller in the Ryzen platform:
    • Supports one 2.5" SATA drive (HDD or SSD).

6. Video Controller​

• Radeon RX Vega 10 GPU:
  • Integrated into the AMD Ryzen 7 3750H processor.
  • Directly manages video outputs (HDMI, DisplayPort, and USB-C).
  • Supports up to 3 simultaneous monitors with 4K@60Hz resolution.

7. SD Card Reader Controller​

• Realtek RTS5170or similar:
  • Manages the integrated SD card reader.
  • Supports high-speed SDHC/SDXC cards.

 

[Edhawk]

Try the attached EFI with your UM700 System.

It is based on OC 1.0.4 with edits to reflect most of the components you listed above. It includes SMBIOS data for a iMac20,1.

Assuming you are using another hack or Mac to create your installer do the following:
Create your macOS Sequoia installer on a 16+GB pen drive,
Copy the EFI folder to the EFI partition on the pen drive after the macOS app install has completed.

Edit your bios, as best you can to reflect these bios options.

Disable​

• Fast Boot
• Secure Boot
• Serial/COM Port
• Parallel Port
• Compatibility Support Module (CSM) (Must be off in most cases, GPU errors/stalls like gIO are common when this option is enabled)
• IOMMU

Enable

• Above 4G Decoding (This should be enabled. I have assumed you can't find the option and have added npci=0x3000to boot-args. Do not enable this option and have the npci boot arg enabled at the same time.)
• EHCI/XHCI Hand-off
• OS type: Windows 8.1/10 UEFI Mode (some motherboards may require "Other OS" instead)
• SATA Mode: AHCI

Not all of these options will be present in your Bios. That is normal. Just make sure you change those that are present to the options listed above.

IGPU Memory allocation.
You will need to use Smokeless_UMAF (standalone bios editor) to change the amount of memory allocated to the Integrated GPU. The IGPU only has 512mb allocated by default, macOS requires a minimum of 1GB, more is obviously better. I use 4GB on my DeskMini X300 & GenMachine 7000 systems. As the Bios usually hides the IGPU memory you need to use a Bios editor to unhide the setting and make the necessary change. Don't change anything else in the bios, unless you are absolutely sure you know what you are doing.

GitHub - DavidS95/Smokeless_UMAF

Contribute to DavidS95/Smokeless_UMAF development by creating an account on GitHub.

github.com

 

[jacklogan]

Thank you for your time