Run GNS3 as administrator (Windows) or fix /tmp permissions (Linux/Mac). Also, ensure your GNS3 VM has enough disk space.
Not all Cisco images work the same way. GNS3 supports three main categories: cisco gns3 images
Let’s walk through the exact process using a Dynamips router (e.g., c7200). Run GNS3 as administrator (Windows) or fix /tmp