The "FortiOS.qcow2" file specifically contains the FortiOS operating system—Fortinet's proprietary security OS—tailored for virtual appliances (FortiGate-VM). Key Use Cases

Create a new Virtual Machine. Assign the QCOW2 file as the primary boot disk (virtio interface is recommended for performance).

To run FortiOS via a QCOW2 image, your environment typically requires: QEMU/KVM, Proxmox, or Nutanix AHV. CPU: Minimum 1 vCPU (2+ recommended for production). RAM: Minimum 1GB (2GB+ for features like SSL Inspection).

Network engineers use this file to simulate complex topologies.