If the file is a self-extracting archive or an installer, you can often extract its contents using standard unarchivers or by running the binary with an extraction flag:
Place the uncompressed c3725-raw.image into the file system of that virtual disk. convert cisco bin to qcow2
run part-disk /dev/sda mbr mkfs ext4 /dev/sda1 mount /dev/sda1 / tar-in cisco-extracted/rootfs.tar / # if you have a tarball copy-in /path/to/cisco-extracted/binaries /boot If the file is a self-extracting archive or
Create the appropriate directory naming structure under /opt/unetlab/addons/qemu/ (e.g., for a CSR1000v, the folder must start with csr1000v- ). for a CSR1000v