Oof. I didn't know that, I assumed they'd get appended. So using the install medium as a makeshift rescue system is a no-no? What is the recommended way of fixing the initrd without losing the yast logs? I have a retired laptop; I can install 15.5 on it, add a non-existant module to INITRD_MODULES and do the upgrade to TW. If it fails again, which it should, I'll attach the logs of the failed run to this bug.