From Fedora Project Wiki
This test validates that the syslinux  (or isolinux) boot menu option Boot from local drive performs properly. This test works best when run on a system with an operating system already installed. For more information, consult the 'The Boot Menu' section of the Installation Guide.
- Boot the ISO image under test (typically a
How to test
- At the boot prompt, select the menu option Boot from local drive (it might be hidden under Troubleshooting menu).
- Graphical boot menu(isolinux or syslinux) is displayed for users to select install options.
- Upon selecting Boot from local drive, anaconda does not start. If an operating system is already installed on the system under test, that operating system is started.