I’ve been trying to setup Unraid as a guest VM in Hyper-V Server 2019. I’m using the USB passthrough trick where you set a USB hard drive to offline and attach it directly to a VM in Hyper-V, which works and Unraid boots to the login prompt.

 

Unraid doesn’t seem to recognise the virtual network adaptors however. I’ve tried both a Gen 1 VM with the Legacy and non-legacy network adapter and a Gen 2 VM which only supports the newer network adapter.

 

After searching through the forums I found some old threads from 2015 that indicated it may be due to missing network drivers and that they were added to Unraid 6 Beta 12. Is there any way to install these drivers? Thanks.

Did you ever find a solution? I'd like to have Unraid in Hyper-V just to test / demo it. It works perfectly by booting from a VHDX but no network really makes it unusable

@mattie112 I've created a bootable VHDX with a copy of my flash drive's contents. unraid's boot menu displays, and unraid will start to boot, but it fails while creating the virtual file system with these messages:

 

/dev/root: Can't open blockdev
VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
Please append a correct "root=" boot option: here are the available partitions:
[no partitions are listed]
Kernel panic - no syncing: VFS: Unable to mount root fs on unknown-block(0,0)

 

How were you able to boot an unraid guest under hyper-v?

 

Thanks,

- Eric

@omnicorp

 

Quote

I’m using the USB passthrough trick where you set a USB hard drive to offline and attach it directly to a VM in Hyper-V

 

How does unraid verify the drive's "signature" against the key file without being a flash drive?

 

Thanks,

- Eric

On 4/30/2021 at 8:13 PM, eweitzman said:

@mattie112 I've created a bootable VHDX with a copy of my flash drive's contents. unraid's boot menu displays, and unraid will start to boot, but it fails while creating the virtual file system with these messages:

 

/dev/root: Can't open blockdev
VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
Please append a correct "root=" boot option: here are the available partitions:
[no partitions are listed]
Kernel panic - no syncing: VFS: Unable to mount root fs on unknown-block(0,0)

 

How were you able to boot an unraid guest under hyper-v?

 

Thanks,

- Eric

I fixed this by increasing the amount of RAM allocated to the VM.

But getting stuck with it unable to detect a device with the volume label "UNRAID". This is very frustrating.

Hi, 

 

I want also to set up Unraid as VM in Hyper-v mainly just as Plex music and picture server and home automation. So data is not very important. The important stuff will be backed up. 

 

Can you help me how to convert the unraid usb into vhdx. How did you do that? I want to get this right the first time. I am trying to achieve that I was not successful at all. 

 

Thanks

 

 

On 6/12/2022 at 7:44 AM, TechAUmNu said:

I fixed this by increasing the amount of RAM allocated to the VM.

But getting stuck with it unable to detect a device with the volume label "UNRAID". This is very frustrating.

I am stuck there too. Where you able to resolve it?