Description of problem: With the recent addition of unified way to refer to installation media (see Bug 488540) it becomes even more useful to have a unified way to handle update images. Currently it seems that in case of ks=... path being incorrect, CD installation will automagically check for /updates directory for updates.img etc but this does not happen with, e.g., USB installations. This unification between CD/USB/DVD/SD/etc would be highly beneficial as scripting to create kickstart files etc becomes much easier and with a large set of users and systems it is impossible to know all the combinations they are used beforehand. One use case example: with a customized install image with different profiles, some profiles supply a valid ks=... path and proceed as usual. Some profiles could provide knowingly an invalid ks=... path and thus check for update images in /updates directory which would then do something appropriate for those install targets. As said, this already can be done with CD installations but not with USB.
If you drop your updates.img into /images on the usb drive, it will get used... https://bugzilla.redhat.com/show_bug.cgi?id=491781
Thanks for the info, I'll try to test this out a bit later. If anyone is able to confirm this earlier please feel free to close this one.
Yep anaconda, searches for the image in images/.