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Scenario B: Converting Modern Virtual Appliances (e.g., CSR1000v / C8000v)
qemu-img convert -f vmdk -O qcow2 cisco-image.vmdk cisco-image.qcow2 Use code with caution. -f vmdk : Specifies the format of the source file. -O qcow2 : Specifies the desired output format (QCOW2). cisco-image.vmdk : The original Cisco disk file. cisco-image.qcow2 : The newly generated disk file. Step 3: Resize the Disk (If Necessary) convert cisco bin to qcow2
sudo apt update sudo apt install qemu-utils qemu-system-x86 source-highlight fdisk -y Use code with caution.
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Cisco images often come in small, fixed sizes. If you plan to use them in virtual labs, you may want to expand the disk to accommodate more configuration files or logs. qemu-img resize final-image.qcow2 +5G Use code with caution. Verifying and Testing the Image After conversion, you need to verify the image is valid. qemu-img info final-image.qcow2 Use code with caution.
: If you are looking for pre-built legal images, Cisco Modeling Labs (CML) provides nodes already in .qcow2 format, bypassing the need for manual conversion. Important Note This public link is valid for 7 days
: Cisco .bin files are not raw disk images. They are bootable firmware executables that run directly on Cisco hardware or under QEMU’s Cisco emulation (vIOS, vIOS-L2, CSR1000v, etc.). The conversion process embeds the .bin into a bootable disk that loads it.