Nucintosh

https://github.com/zearp/nucintosh
Admin
Nucintosh provides OpenCore EFI configurations, kexts, and setup instructions for running macOS on...
Tokens:43,963
Snippets:285
Trust Score:9
Update:2 weeks ago
Show doc for...
Tokens:
Raw
### Apply CPU and CPU Cache undervolt with ./voltageshift offset

Source: https://github.com/zearp/nucintosh/blob/master/README.md

Apply a light undervolt to CPU and CPU Cache (e.g., -25 mV) while leaving GPU at 0. The output shows the before and after offsets. Start with this value, then stress test for 5-10 minutes and repeat with lower values until the system freezes.

```bash
./voltageshift offset -25 0 -25
```

```text
zearp@nuc ~ % ./voltageshift offset -25 0 -25                                       
--------------------------------------------------------------------------
VoltageShift offset Tool
--------------------------------------------------------------------------
Before CPU voltageoffset: 0mv
Before GPU voltageoffset: 0mv
Before CPU Cache: 0mv
--------------------------------------------------------------------------
After CPU voltageoffset: -25mv
After GPU voltageoffset: 0mv
After CPU Cache: -25mv
--------------------------------------------------------------------------
```

--------------------------------

### SMBIOS configuration examples for fields in Table 2.1.1

Source: https://github.com/zearp/nucintosh/blob/master/Stuff/Intel Integrator Toolkit User Guide.pdf

Example commands from Table 2.1.1 for setting or deleting SMBIOS fields. The -t flag can be changed to system, chassis, or oem where multiple types are compatible. The -d flag deletes the value, and Chassis Type must be a number between 1 and 29.

```shell
ITK6.efi –s –t system –f manufacturer –v myMan
```

```shell
ITK6.efi –s –t system –f manufacturer –d
```

```shell
ITK6.efi –s –t system –f product –v myProduct
```

```shell
ITK6.efi –s –t system –f version –v myVersion
```

```shell
ITK6.efi –s –t system –f serial –v mySerial
```

```shell
ITK6.efi –s –t system –f sku –v mySKU
```

```shell
ITK6.efi –s –t system –f family –v myFamily
```

```shell
ITK6.efi –s –t chassis –f asset –v myAsset
```

```shell
ITK6.efi –s –t chassis –f type –v 3
```

```shell
ITK6.efi –s –t oem –f oem1 –v myString
```

```shell
ITK6.efi –s –t oem –f oem2 –v myString
```

```shell
ITK6.efi –s –t oem –f oem3 –v myString
```

--------------------------------

### Create boot-time undervolt with sudo ./voltageshift buildlaunchd

Source: https://github.com/zearp/nucintosh/blob/master/README.md

Create a launch daemon to apply the undervolt at boot. The arguments are: CPU offset, GPU offset, CPU Cache offset, System Agency offset, Analogy I/O, Digital I/O, ?, PL1, PL2, ?, and ?. The utility will exit with an error, which is normal because it was modified to run from EFI.

```bash
sudo ./voltageshift buildlaunchd -75 0 -75 0 0 0 1 35 65 0 120
```

--------------------------------

### Verify launch daemon plist with file command

Source: https://github.com/zearp/nucintosh/blob/master/README.md

Verify that the launch daemon plist was created after running buildlaunchd. The output confirms the file exists and is an XML document.

```bash
file /Library/LaunchDaemons/com.sicreative.VoltageShift.plist
```

```text
zearp@nuc ~ % file /Library/LaunchDaemons/com.sicreative.VoltageShift.plist
/Library/LaunchDaemons/com.sicreative.VoltageShift.plist: XML document text, ASCII text, with very long lines
```

--------------------------------

### Display current VoltageShift configuration with ./voltageshift info

Source: https://github.com/zearp/nucintosh/blob/master/README.md

Run the voltageshift binary from the directory where you placed it to display the current configuration. The output shows current voltage offsets, PL1/PL2 power limits, and CPU frequency/voltage/power/temperature. Note the 'OC mailbox cmd failed' message is expected.

```bash
./voltageshift info
```

```text
zearp@nuc ~ % ./voltageshift info
------------------------------------------------------
   VoltageShift Info Tool
------------------------------------------------------
CPU voltage offset: 0mv
GPU voltage offset: 0mv
CPU Cache voltage offset: 0mv
System Agency offset: 0mv
Analogy I/O: 0mv
OC mailbox cmd failed
Digital I/O: 0mv
CPU BaseFreq: 2300, CPU MaxFreq(1/2/4): 3800/3800/3600 (mhz)  PL1: 35W PL2: 65W 
CPU Freq: 0.8ghz, Voltage: 0.6144v, Power:pkg 3.53w /core 0.80w,Temp: 94 c
```

--------------------------------

### Import custom logo/image/splash screen with ITK6.efi -il

Source: https://github.com/zearp/nucintosh/blob/master/Stuff/Intel Integrator Toolkit User Guide.pdf

Creates a custom .BIO file that imports a custom logo/image/splash screen from a .JPG file. The -il flag specifies the logo file, which must be a .jpg with a maximum size of 60KB and resolution between 120x120 and 1920x1080 pixels. To revert to the default logo, use one of the included images in the Intel_Default_Splash_Screen folder, e.g., "-il Intel_Default_Splash_Screen\NUC\Intel_NUC_Default_512x384.jpg".

```shell
ITK6.efi –b –x myCustomBio.bio –il myLogo.jpg
```

--------------------------------

### Enable TRIM with sudo trimforce enable

Source: https://github.com/zearp/nucintosh/blob/master/README.md

Enables TRIM support for SSDs. Run only if TRIM is not already enabled.

```bash
sudo trimforce enable
```

--------------------------------

### Import SMBIOS Configuration with ITK6.efi -is

Source: https://github.com/zearp/nucintosh/blob/master/Stuff/Intel Integrator Toolkit User Guide.pdf

Creates a custom .BIO file that imports the current SMBIOS configuration. The -b flag enables BIOS Update File Creation, -x specifies the output filename (must end with .bio), and -is imports the current SMBIOS configuration. If the file already exists, you can overwrite it or exit.

```shell
ITK6.efi –b –x myCustomBio.bio –is
```

--------------------------------

### Import OEM Windows Product Key Data with ITK6.efi -io

Source: https://github.com/zearp/nucintosh/blob/master/Stuff/Intel Integrator Toolkit User Guide.pdf

Creates a custom .BIO file that imports the current OEM Windows product key data (OA3.0). The -b flag enables BIOS Update File Creation, -x specifies the output filename (must end with .bio), and -io imports the current OEM product key data. Ensure the current OEM product key data is correct before importing.

```shell
ITK6.efi –b –x myCustomBio.bio –io
```
Tokens:
Raw