I need to run an Intel diagnostic via a live Fedora 25 image. However, the server I wish to run this on has only one USB port so I can't plug in a keyboard and the flash drive at the same time (I know a USB hub is an option). These servers are all configured with console access but when the USB boot device is selected, the console starts acting up. I know I need to add console=ttyS0,115200n8 to the kernel arguments, I just haven't been able to successfully do it. I have attempted to do this by:Mounting the Fedora isoCopying all files from said iso to a tmp drive since the original iso is read onlyEditing isolinux.cfg to include the console string in the append sectionCreating and burning a new iso from the copied and edited filesHowever, when I do this the newly created USB is not bootable. I select it from my boot menu and it doesn't even get to the Fedora boot menu.How can I go about modifying a Fedora image that will boot?EDIT: The primary issue I am having is that when I try to create a modified ISO with the kernel parameters I need, it is no longer bootable.
How can I edit a file inside a bootable ISO and make it bootable (USB) again?
fedora;console;live usb;iso