LinuxQuestions.org - Create a ISO without changing filenames (genisoimage)

I am attempting to create an ISO image of a customized yum repository on CentOS 6. Whenever I use genisoimage, it changes the file names in some way. I have tried a variety of different options, but can't figure out how to just make it keep filenames the same.

For example, the directory structure goes from:

Code:

repodata/

Packages/

CentOS-Media.repo

To:

Code:

repodata/

packages/

centos-media.repo

This breaks the repository since the package directory no longer matches (packages != Packages). It also makes all of the package names lowercase.

The options I tried are:

Code:

genisoimage -allow-leading-dots -allow-lowercase -allow-multidot -d -D -iso-level 4 -relaxed-filenames -no-iso-translate -o repo.iso repo/

What are the options that will make genisoimage just copy the directory to an ISO image.

Thanks!