I am trying to create a custom ISO for installing linux on dedicated servers, based on a standard ISO. For this, I need to edit a file which contains parameters for partitioning the HD, as I have replaced the supplied HD with a larger one on many machines, and want to modify partition creation, so I do not have to install fdisk and modify the /home partition later. I have the ISO and can mount it, and edit the necessary file, but I cannot save it back into the ISO. How should I do this? I've googled widely and found nothing. OSX 10.3, Toast 5, trying to alter Cobalt Raq 4i ISO. Thanks in advance. Really!