I'm using one of my persistent ext3 partitions to host the iso images, therefore I cannot design a mountpoint for it during installation. Why isn't that possible? I don't know a lot about linux yet, so I'd prefer to have this done by the installer. At any rate, it would be more convenient, since you wouldn't have to fiddle with the fstab. I would like to be able to select mountpoint also for this partition.
We will consider this in a future release.