I installed Debian Sarge. In the configuration dialog, i was asked to define the resolution. I mistakely chose 640*480 which sucks. I reinstalled Debian but I was not anymore asked about the resolution.then I reinstalled the system a couple of times again but i was never asked about the resolution again, but it was preset as 640*480.
This means Debian somehow remembers settings from the last installation(?!) even i chose to delete the linux partitions in the installer. So i guess the partitions are not deleted in reality.
How can I really format the partitions in a way that the installer shows the resolution dialog again, when installing?