diskdrake exists in mandrake however i found it was unworkable to use while actually running the system. the best way to use diskdrake in my opinion is to boot from your install disk number 1, then humour it until the diskdrake screen, and do your partitioning, then write the partitions and abort the rest of the 'install'. This is a bit destructive though. i seem to remember MoR had some good tips for resizing of partitions et c but that was not using any GUI stuff.
edit: sorry, thought you wanted GUI only (mandrake's like that), did you look into using 'parted'? i don't know if it comes with mandrake, but i like it as a partitioning tool, from what little i have done with it, not sure if it does non-destructive resizing though.
[ May 08, 2003: Message edited by: Calum: hopelessly outnumbered ]