Hey everyone,

Really hoping I have just made a simple error and someone can help. My Windows 10 VM was crashing constantly with this error;

VFIO_MAP_DMA failed

and I saw a post about needing to bind the gpu and audio to the vfio. I clicked through tools-system devices and clicked the associated devices and hit bind. Now my unraid won't boot at all, and hangs on vt d active for gfx access.

I tried to delete the vfio-cfg folder but that hasn't helped. I also stupidly didn't realise that my usb backup was stored on onedrive, not locally, and I deleted most of the onedrive contents so now I do not have a backup

Any help will be greatly appreciated

When you say Unraid doesn't boot, do you mean you lose access after array (VMs) start, or doesn't it even boot normally?

I have very limited knowledge of unraid so please forgive me if I use any wrong terms. It was just hanging after that Vt-d line when booting.

I just pulled my monitor cable from the GPU and put it in the iGPU, and unraid now fully boots. I'm still stuck with my windows 10 VM not staying running. The error code is this:

2025-12-11T10:21:44.501349Z qemu-system-x86_64: VFIO_MAP_DMA failed: Invalid argument

2025-12-11T10:21:44.501354Z qemu-system-x86_64: vfio_dma_map(0x1498d1e43000, 0x380010000000, 0x2000000, 0x1498be400000) = -22 (Invalid argument)

1 hour ago, jcolum said:

I'm still stuck with my windows 10 VM not staying running. The error code is this:

Remove any passed-through devices from the VM XML and retest.