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How to edit install.img
Introduction
This HowTo describes how to extract, edit and rebuild the install.img file of an SL6 release. This file is found in the distribution toplevel $basearch directory e.g. in /afs/psi.ch/software/linux/dist/scientific/62/x86_64/images/ at our site. It is loaded during the installation and brings up the installation process.
The reason to edit the install.img in this example is the file /etc/anaconda.repos.d/sl.repo, which references the original SL repos, i.e. the anaconda installer will try to get RPMS from these external repos during the installation even if we declare our local repos in the kickstart config file. We want now that anaconda takes RPMS from our local copies of the SL repos, because first the installation is faster, second we do not depend on down times of the SL site.