# Firmware changes

Now depending on your computer motherboard make sure of:

For Desktops:

* XHCI Handoff: Enabled (if applicable, some may not have this option)
* OS Type: Other (if applicable)
* Secure Boot: Disabled (refer to google or your motherboard's manual on how to disable it)
* Legacy/CSM support: Disabled \[if you see a garbled screen, enable this]
* If you have an Nvidia/AMD GPU:
  * NO DISPLAY is connected to the motherboard's DP/HDMI/VGA/DVI ports
  * under System Agent (SA) \[or some other menu], Graphics Settings, Main Display: PEG or PCIE
  * Disable anything like: Hybrid Graphics, Dual Graphics, DVMT size ... that are related to Intel GPU
* If you have Intel GPU:
  * make sure your DVMT pre-alloc (not to be confused with DVMT size), is set to 64MB (or higher, 64 is enough), DMVT size/apertures/whatever, to the max.

For laptops:

* make sure you have Secure Boot Disabled
* TMP/Security Chips/Security modules Disabled (if possible, it may be enabled later on)
* DVMT-prealloc to 64MB (if possible, not to be confused with DVMT size/aperture/whatever, however it may be seen as Graphics Memory)
* move from RAID/IDE to AHCI (if applicable)
* Disable the external GPU (if possible)
* Enable USB Legacy support (on some cases)
* Disable fast boot
* Disable LAN/WLAN/WWAN boot/wake
* Disable USB wake


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://internet-install.gitbook.io/macos-internet-install/firmware-changes.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.
