This step is shown only if an existing GNU/Linux partition is found on your machine.
DrakX now needs to know if you want to install from scratch or upgrade your existing Mandrakelinux system:
Install. For the most part, this
completely wipes out the old system. However, depending on your
partitioning scheme, you can prevent some of your existing data
(particularly /home
directories) from being
overwritten. If you wish to change how your hard drives are
partitioned, or to change the file system, you should use this
option.
Upgrade.This installation class allows you to update the packages currently installed on your Mandrakelinux system. Your current partitioning scheme and user data won't be altered. Most of the other configuration steps remain available and are similar to a standard installation.