SLES 11 sp1 to sp2 unable to add mobility addon

I am trying to upgrade our SLES 11 sp1 to Sp2 by following TID 7010339 but I am unable to add the mobility cd to the add-on list while booting from the sp2 cd. It just does not add anything when trying to read the cd.
If I just keep going it uninstalls datasync.
I have reverted the VM back to Sp1 for now.

Anyone any ideas ?