====== Proxmox - GPU Passthrough - Configure VM ======

===== Download VirtIO drivers (Optional, but RECOMMENDED for Windows VMs) =====

<WRAP info>
**NOTE:**  The VirtIO ISO file contains the VirtIO drivers to mount as a CD-ROM in order to install Windows 10 using VirtIO (SCSI).

For the CD-Rom, it is fine if use IDE or SATA.

  * Make sure CD-ROM is selected as the primary boot device under the **Options** tab, when you are done creating the VM.
  * Ensure that VirtIO (SCSI, not VirtIO Block) is selected for the Hard disk and Network Adapter.
</WRAP>

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===== Enable OMVF (UEFI) for the VM =====

Under the VM **Options** Tab, set the following:

  * Boot Order:  **CD-ROM, Disk (scsi0)**.
  * SCSI Controller:  **VirtIO SCSI Single**.
  * BIOS:  **OMVF (UEFI)**.

<WRAP info>
**NOTE:**  When you change the BIOS from SeaBIOS (Default) to OMVF (UEFI), Proxmox will say something about adding an EFI disk.

In this case navigate to the **Hardware** Tab.

  * **Add -> EFI Disk**.

</WRAP>

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===== Edit the VM Config File =====

Edit **/etc/pve/qemu-server/<vmid>.conf**, where <vmid> is the VM ID Number you used during the VM creation (General Tab).

Add these lines.

<file bash>
machine: q35
cpu: host,hidden=1,flags=+pcid
args: -cpu 'host,+kvm_pv_unhalt,+kvm_pv_eoi,hv_vendor_id=NV43FIX,kvm=off'
</file>

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===== Add PCI Devices (The GPU) to VM =====

Select the VM.

Under the Hardware Tab, click on the **Add** button towards the top.

Then under the drop-down menu, click **PCI Device**.

Look for the GPU in the list, and select it.

On the PCI options screen, you should only need to configure it like so:

  * All Functions: **Checked**.
  * Rom-Bar: **Checked**.
  * Primary GPU: **Not Checked**.
  * PCI-Express:  **Checked**.  This requires **machine: q35** in the VM config file.

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