hi dear cummunity
I wrote small instruction for many users, who use hypervisor QEMU\KVM
(best for me config in attach "XML")
download loader
convert synoboot.img to qcow2
qemu-img convert -f raw -O qcow2 synoboot.img synoboot-qcow2.img
create VM with $your-name-vm
open config file with $your-name-vm
virsh edit $your-name-vm
edit CPU
<cpu mode='custom' match='exact'>
<model fallback='allow'>