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First of all (you did already, but others finding this might wonder as it isn't auto-installed as dependency in 18.04 - it is on later releases) you need to install ovmf $ apt install ovmf I tried the same on 18.04 and 20.04 and both worked fine. Note: A common reason for this error is to use arm64 EFI roms on x86 (example 1, example 2, but your config ...


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IIRC this part of the libvirt backend uses netcf which only can work with the pre systemd-networkd era of network configuration (read not a new 18.04). Going forward Ubuntu switched to use udev backend instead (>=Cosmic). You might be able to make Bionic work (unsupported) via: apt install netcf libnetcf1 ifconfig But that only works if you have an ...


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Do you want to run a copy / clone of A-Ubuntu inside a VM hosted by partB-Windows? Or do you want to run the partA-Ubuntu from a VM hosted by partB-Windows? Both are possible, first option is harder to maintain. Someone have documented all steps on this site. The second option is really easy as Linux is friendly : Dump partA to an image, convert it to a VM ...


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libvirt (and thereby virt-manager, virt-install, ...) do not probe/know the actual bridges on the system. You have already defined your vlans and bridges via netplan, which is great and the correct step #1. By default there only is the default network which is a NAT based local bridge, you need to define a network. In that you control what bridges, ...


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From revision #6 of the question: grep: /etc/resolv.conf: No such file or directory meant that this was a dead symlink and so I removed resolv.conf and defined the name server to be used by the enp0s8 dhcp interface as Google DNS with echo "nameserver 8.8.8.8" > /etc/resolv.conf, creating the resolv.conf file with the associated Google DNS information. ...


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