Can you partition a drive without formatting?

[Serp86]

Hy hard disk is 250GB and have 120 free.

Can I partition the drive, and make a separate 40Gb partition without formatting?

 

[sutahz]

Yes.
Partition Magic
Acronis
Disk doctor (?)

 

[taltamir]

gparted - free open source repartitioning software:
http://gparted.sourceforge.net/