Thanks, done that now and still not getting any further on vnc.
Log file
2020-05-18 14:03:58.951+0000: starting up libvirt version: 5.10.0, qemu version: 4.2.0, kernel: 4.19.107-Unraid, hostname: Loki
LC_ALL=C \
PATH=/bin:/sbin:/usr/bin:/usr/sbin \
HOME=/var/lib/libvirt/qemu/domain-5-MacinaboxCatalina \
XDG_DATA_HOME=/var/lib/libvirt/qemu/domain-5-MacinaboxCatalina/.local/share \
XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain-5-MacinaboxCatalina/.cache \
XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain-5-MacinaboxCatalina/.config \
QEMU_AUDIO_DRV=none \
/usr/local/sbin/qemu \
-name guest=MacinaboxCatalina,debug-threads=on \
-S \
-object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-5-MacinaboxCatalina/master-key.aes \
-blockdev '{"driver":"file","filename":"/mnt/disks/Samsung_SSD_840_EVO_250GB_S1DBNSBDC39645R/MacinaboxCatalina/ovmf/OVMF_CODE.fd","node-name":"libvirt-pflash0-storage","auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-pflash0-format","read-only":true,"driver":"raw","file":"libvirt-pflash0-storage"}' \
-blockdev '{"driver":"file","filename":"/mnt/disks/Samsung_SSD_840_EVO_250GB_S1DBNSBDC39645R/MacinaboxCatalina/ovmf/OVMF_VARS.fd","node-name":"libvirt-pflash1-storage","auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-pflash1-format","read-only":false,"driver":"raw","file":"libvirt-pflash1-storage"}' \
-machine pc-q35-3.1,accel=kvm,usb=off,dump-guest-core=off,mem-merge=off,pflash0=libvirt-pflash0-format,pflash1=libvirt-pflash1-format \
-cpu qemu64 \
-m 12288 \
-overcommit mem-lock=off \
-smp 8,sockets=8,cores=1,threads=1 \
-uuid f93a9cba-5352-4949-9c47-4a2f98489614 \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=33,server,nowait \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=utc,driftfix=slew \
-global kvm-pit.lost_tick_policy=delay \
-no-hpet \
-no-shutdown \
-boot strict=on \
-device pcie-root-port,port=0x10,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x2 \
-device pcie-root-port,port=0x11,chassis=2,id=pci.2,bus=pcie.0,addr=0x2.0x1 \
-device pcie-root-port,port=0x12,chassis=3,id=pci.3,bus=pcie.0,addr=0x2.0x2 \
-device pcie-root-port,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x3 \
-device ich9-usb-ehci1,id=usb,bus=pcie.0,addr=0x7.0x7 \
-device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pcie.0,multifunction=on,addr=0x7 \
-device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pcie.0,addr=0x7.0x1 \
-device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pcie.0,addr=0x7.0x2 \
-device virtio-serial-pci,id=virtio-serial0,bus=pci.2,addr=0x0 \
-blockdev '{"driver":"file","filename":"/mnt/disks/Samsung_SSD_840_EVO_250GB_S1DBNSBDC39645R/MacinaboxCatalina/Clover.qcow2","node-name":"libvirt-3-storage","cache":{"direct":false,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-3-format","read-only":false,"cache":{"direct":false,"no-flush":false},"driver":"raw","file":"libvirt-3-storage"}' \
-device ide-hd,bus=ide.2,drive=libvirt-3-format,id=sata0-0-2,bootindex=1,write-cache=on \
-blockdev '{"driver":"file","filename":"/mnt/disks/Samsung_SSD_840_EVO_250GB_S1DBNSBDC39645R/MacinaboxCatalina/Catalina-install.img","node-name":"libvirt-2-storage","cache":{"direct":false,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-2-format","read-only":false,"cache":{"direct":false,"no-flush":false},"driver":"raw","file":"libvirt-2-storage"}' \
-device ide-hd,bus=ide.3,drive=libvirt-2-format,id=sata0-0-3,write-cache=on \
-blockdev '{"driver":"file","filename":"/mnt/disks/Samsung_SSD_840_EVO_250GB_S1DBNSBDC39645R/MacinaboxCatalina/macos_disk.img","node-name":"libvirt-1-storage","cache":{"direct":false,"no-flush":false},"auto-read-only":true,"discard":"unmap"}' \
-blockdev '{"node-name":"libvirt-1-format","read-only":false,"cache":{"direct":false,"no-flush":false},"driver":"raw","file":"libvirt-1-storage"}' \
-device ide-hd,bus=ide.4,drive=libvirt-1-format,id=sata0-0-4,write-cache=on \
-netdev tap,fd=35,id=hostnet0 \
-device vmxnet3,netdev=hostnet0,id=net0,mac=52:54:00:bc:86:53,bus=pci.1,addr=0x0 \
-chardev pty,id=charserial0 \
-device isa-serial,chardev=charserial0,id=serial0 \
-chardev socket,id=charchannel0,fd=36,server,nowait \
-device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 \
-device usb-tablet,id=input0,bus=usb.0,port=1 \
-vnc 0.0.0.0:0,websocket=5700 \
-k en-us \
-device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vram64_size_mb=0,vgamem_mb=16,max_outputs=1,bus=pcie.0,addr=0x1 \
-device virtio-balloon-pci,id=balloon0,bus=pci.3,addr=0x0 \
-usb \
-device usb-kbd,bus=usb-bus.0 \
-device '************************' \
-smbios type=2 \
-cpu Penryn,kvm=on,vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+pcid,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,check \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on
2020-05-18 14:03:58.951+0000: Domain id=5 is tainted: high-privileges
2020-05-18 14:03:58.951+0000: Domain id=5 is tainted: custom-argv
char device redirected to /dev/pts/0 (label charserial0)
2020-05-18T14:03:58.981498Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.pcid [bit 17]
2020-05-18T14:03:58.982835Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.pcid [bit 17]
2020-05-18T14:03:58.983490Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.pcid [bit 17]
2020-05-18T14:03:58.984201Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.pcid [bit 17]
2020-05-18T14:03:58.985207Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.pcid [bit 17]
2020-05-18T14:03:58.986288Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.pcid [bit 17]
2020-05-18T14:03:58.987422Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.pcid [bit 17]
2020-05-18T14:03:58.988499Z qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.01H:ECX.pcid [bit 17]
XML file
<?xml version='1.0' encoding='UTF-8'?>
<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
<name>MacinaboxCatalina</name>
<uuid>f93a9cba-5352-4949-9c47-4a2f98489614</uuid>
<description>MacOS Catalina</description>
<metadata>
<vmtemplate xmlns="unraid" name="Windows 10" icon="default.png" os="Catalina"/>
</metadata>
<memory unit='KiB'>12582912</memory>
<currentMemory unit='KiB'>12582912</currentMemory>
<memoryBacking>
<nosharepages/>
</memoryBacking>
<vcpu placement='static'>8</vcpu>
<cputune>
<vcpupin vcpu='0' cpuset='12'/>
<vcpupin vcpu='1' cpuset='28'/>
<vcpupin vcpu='2' cpuset='13'/>
<vcpupin vcpu='3' cpuset='29'/>
<vcpupin vcpu='4' cpuset='14'/>
<vcpupin vcpu='5' cpuset='30'/>
<vcpupin vcpu='6' cpuset='15'/>
<vcpupin vcpu='7' cpuset='31'/>
</cputune>
<os>
<type arch='x86_64' machine='pc-q35-3.1'>hvm</type>
<loader readonly='yes' type='pflash'>/mnt/disks/Samsung_SSD_840_EVO_250GB_S1DBNSBDC39645R/MacinaboxCatalina/ovmf/OVMF_CODE.fd</loader>
<nvram>/mnt/disks/Samsung_SSD_840_EVO_250GB_S1DBNSBDC39645R/MacinaboxCatalina/ovmf/OVMF_VARS.fd</nvram>
</os>
<features>
<acpi/>
<apic/>
</features>
<clock offset='utc'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/local/sbin/qemu</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<source file='/mnt/disks/Samsung_SSD_840_EVO_250GB_S1DBNSBDC39645R/MacinaboxCatalina/Clover.qcow2'/>
<target dev='hdc' bus='sata'/>
<boot order='1'/>
<address type='drive' controller='0' bus='0' target='0' unit='2'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<source file='/mnt/disks/Samsung_SSD_840_EVO_250GB_S1DBNSBDC39645R/MacinaboxCatalina/Catalina-install.img'/>
<target dev='hdd' bus='sata'/>
<address type='drive' controller='0' bus='0' target='0' unit='3'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='raw' cache='writeback'/>
<source file='/mnt/disks/Samsung_SSD_840_EVO_250GB_S1DBNSBDC39645R/MacinaboxCatalina/macos_disk.img'/>
<target dev='hde' bus='sata'/>
<address type='drive' controller='0' bus='0' target='0' unit='4'/>
</disk>
<controller type='sata' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x1f' function='0x2'/>
</controller>
<controller type='pci' index='0' model='pcie-root'/>
<controller type='pci' index='1' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='1' port='0x10'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0' multifunction='on'/>
</controller>
<controller type='pci' index='2' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='2' port='0x11'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x1'/>
</controller>
<controller type='pci' index='3' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='3' port='0x12'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x2'/>
</controller>
<controller type='pci' index='4' model='pcie-root-port'>
<model name='pcie-root-port'/>
<target chassis='4' port='0x13'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x3'/>
</controller>
<controller type='virtio-serial' index='0'>
<address type='pci' domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
</controller>
<controller type='usb' index='0' model='ich9-ehci1'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x7'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci1'>
<master startport='0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0' multifunction='on'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci2'>
<master startport='2'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x1'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci3'>
<master startport='4'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x2'/>
</controller>
<interface type='bridge'>
<mac address='52:54:00:bc:86:53'/>
<source bridge='br0'/>
<model type='vmxnet3'/>
<address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
</interface>
<serial type='pty'>
<target type='isa-serial' port='0'>
<model name='isa-serial'/>
</target>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<channel type='unix'>
<target type='virtio' name='org.qemu.guest_agent.0'/>
<address type='virtio-serial' controller='0' bus='0' port='1'/>
</channel>
<input type='tablet' bus='usb'>
<address type='usb' bus='0' port='1'/>
</input>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='vnc' port='-1' autoport='yes' websocket='-1' listen='0.0.0.0' keymap='en-us'>
<listen type='address' address='0.0.0.0'/>
</graphics>
<video>
<model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1' primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
</memballoon>
</devices>
<qemu:commandline>
<qemu:arg value='-usb'/>
<qemu:arg value='-device'/>
<qemu:arg value='usb-kbd,bus=usb-bus.0'/>
<qemu:arg value='-device'/>
<qemu:arg value='isa-applesmc,osk=XXXXXXXXXXXXXXX'/>
<qemu:arg value='-smbios'/>
<qemu:arg value='type=2'/>
<qemu:arg value='-cpu'/>
<qemu:arg value='Penryn,kvm=on,vendor=GenuineIntel,+invtsc,vmware-cpuid-freq=on,+pcid,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,check'/>
</qemu:commandline>
</domain>