We need a test case written for checking whether media check failure is correctly presented on the screen when a boot media is corrupted. We currently don't have it and then regressions like bug 2246410 happen. See the bug for a description on how to create a corrupted media and how to check the failure.

The test case must be checked on bare metal, at least. Checking it in a VM might also be useful, especially with automation, but bare metal is the important part here.

Once the test case is written, also make sure it's included in our release validation matrices, and references/referenced from our release criterion.