Once your file format is ready, you must place it in the correct directory path for your emulation software to recognize it. For EVE-NG
Which you are targeting (EVE-NG, GNS3, or CML)? The exact Cisco model/series of your .bin file?
| If you have... | Recommended action | | --- | --- | | Legacy IOS .bin (2500, 2600, 3600, 7200) | Use inside GNS3 or EVE-NG. Do not attempt KVM conversion. | | IOS-XE .bin (CSR1000v) | Download the official .qcow2 from Cisco Software Center. | | IOL .bin (IOU/L2/L3) | Run natively on Ubuntu with i86bi wrapper, or create a chroot .qcow2 . | | Curiosity & time to hack | Try QEMU’s -kernel boot with serial console; expect 90% failure. | convert cisco bin to qcow2
Fix permissions: /opt/unetlab/wrappers/unl_wrapper -a fixpermissions Go to .
qemu-img create -f qcow2 iol-base.qcow2 4G Once your file format is ready, you must
| Cisco Image Type | Boot Method in QEMU | |----------------|----------------------| | IOS (classic, e.g., c7200-*.bin ) | Loaded directly by QEMU as a kernel ( -kernel ) | | IOS-XE (CSR1000v, ASAv) | Requires bootable disk with GRUB + .bin as kernel | | vIOS / vIOS-L2 | Already QEMU-ready; often supplied as .qcow2 | | NX-OS | Separate process (uses different boot architecture) |
Often, Cisco distributes virtual appliance updates as .bin installers or .ova / .iso bundles instead of raw hardware binaries. If you downloaded a virtual appliance upgrade package ending in .bin or .iso , use this method. Step 1: Extracting the RAW/ISO image | If you have
Ensure your virtual disk is healthy and check its virtual size versus its physical disk footprint: qemu-img info optimized.qcow2 Use code with caution.
