Description of problem, bug, incorrect information, or enhancement request: Anaconda's Media Check will often fail valid discs. The workaround is to boot Anaconda with "linux ide=nodma" (which works for me on FC4t3). This issue has been around for a couple of releases, so there are a number of bugs filed against it. #1552266 looks like the most recent of these: https://bugzilla.redhat.com/bugzilla/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_status=MODIFIED&short_desc_type=allwordssubstr&short_desc=media+check&long_desc_type=allwordssubstr&long_desc= They are all marked as assigned to Dave Jones, so he may be able to give a clearer picture. Version of release notes this bug refers to: FC4test3 URL of bug/enhancement (change if different): http://fedoraproject.org/wiki/FedoraDocs/RelNotes/Core4Test3RelNotes
Making a release notes blocker so we don't lose it again.
Used content just about like this for the final release notes for FC4. Thanks Stuart! <para> The <command>mediacheck</command> function is highly sensitive, and may report some usable discs as faulty. This result is often caused by disc writing software that does not include padding when creating discs from ISO files. For best results with the <command>mediacheck</command>, boot with the option: </para> <screen> linux ide=nodma </screen> <para> Use the <command>sha1sum</command> utility to verify discs before carrying out an installation. This test accurately identifies discs that are not valid or identical to the ISO image files. </para>