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Let me add on more point. in order to create this additional disk space, we need to go inside the vManage folder. In my case, i am using 19.2.0 Command.cd /opt/unetlab/addons/qemu/vtmgmt-19.2.0/opt/qemu/bin/qemu-img create -f qcow2 virtiob.qcow2 100G...