I wish to have part of my hdb for windows

[guadalmina]

I am running a dual boot system with widows xp and boor loader on hda. I have Mandrake linux on hdb.
However I wish to use a section of hdb for windows (about 10gigs of 80 gig drive) so that files can be shared betwen the two systems. I understand that i will need to format that as fat32.
However i have tried using diskdrake but it won't allow me to unmount beore i proceed any further.
Any pointers for a newbie would be much appreciated.
Roly

[Flatline]

You can't resize a disk that's mounted, and it sounds like you're trying to resize your / partition, so you can't unmount it and then resize it. You could try booting from a live cd like Knoppix or Sysresccd (one of my favorites) and then running qtparted. You should be able to resize the partition that way.

[shanterusan]

It may be possible to use a third party boot manager to resize the partition. I'm not sure how it works with the Linux native filesystem though. Sorry I can't be of more help, but that may point you at something useful.