RaspberryMatic in VM on TrueNAS

Is there anybody who got RaspberryMatic running in a VM unter TrueNAS?

I have problems setting up RaspberryMatic under HA with the add-ons and wanted to try out RaspberryMatic in a VM. But I can’t get it to run.
Maybe someone has a link with a hint to setting it up.

I tried this way in the TrueNAS-Shell as root:

wget https://github.com/jens-maus/RaspberryMatic/releases/download/3.83.6.20250824/RaspberryMatic-3.83.6.20250824.ova
mkdir RaspberryMatic
cd RaspberryMatic
tar xvf ../3.83.6.20250824/RaspberryMatic-3.83.6.20250824.ova
qemu-img convert -O qcow2 RaspberryMatic.vmdk RaspberryMatic.qcow2
qemu-img resize RaspberryMatic.qcow2 +5G
qemu-img convert -p -O raw RaspberryMatic.qcow2 /dev/zvol/app-pool/virtual-disks/RaspberryMatic

And than I tried to use the zvol in an new VM

And then what happens? Did you create the VM with a display device? What is shown when you power it on?

I get just a shell promt like on an emty VM.

A shell prompt means some OS is running, right? Or do you mean UEFI shell? Maybe that image needs legacy (BIOS) BOOT?

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It’s the UEFI Shell. I will try legacy BIOS Boot tonight.

Just one little mark in a checkbox ant it works.
Thanks for the right hint.