jojos

Having exactly the same problem here! Is a solution for this known? Especially when using a HBA card? Tried the exact same steps in my proxmox setup but always failed.

Do you mean the Still waiting for boot device (waited x of 30 seconds) message? I think it might be related to having to install the drivers for accessing you controller and something with the device tree binary extension. But I cannot really make it work either. What were your concrete steps?