PARTDISK and Drive Management is destructive. You can not RESIZE a partition, but only delete and create.
If you want a free endrun around the problem which I don't offer any support other to note its been done... Get a current Linux distribution and use it's installer to install Linux. Then rewrite the master boot record (hint: FIXMBR) and then use DISKPART or Drive Management to delete the Linux partition and create what you want.
BEWARE that such a partition copy is just a copy and not a backup.
Can I create a partition using XP Home Edition after XP is already installed on the drive?
I have a fresh installation of XP Home Edition already installed on an 80 G HD and would like to create an image of the installation for backup purpose. Can I create a partition of this installation with XP or do I need a 3rd party product? If it is 3rd party, what do you recommend?
If I tried to create an image of the installation the way it is presently set up it would be hughe? Right?