comodo is installed on an external hard drive. I’d like to reinstall windows. Will I have to reinstall comodo as well? Where is its config stored? How do I go about preserving it?
The settings are stored in the registry and drivers are installed in various locations, such as Windows\System32 (also SysWOW64 on 64bit windows) and Windows\System32\Drivers. If you’re going to reinstall Windows, you’ll want to reinstall CIS.
You can export your current configuration via the CIS Control Panel/More/Manage My Configurations. You can then import the configuration after you’ve installed Windows.