[CentOS] Modifying a netinstall ISO image

> This appears to work just fine, but the resulting ISO image is about 20% bigger (194M vs. 162M)
> and has an extra TRANS.TBL file at the top level.  Any ideas what is causing this?  It's no big
> deal as I've got things working, but I'm curious nonetheless...

And that is just about the size of the duplicate initrd.img file.

If you are going to ignore the manual page you posted and include the images directory, hard link
the duplicate file and re-author :)

jlc