Originally Posted by loveulinux
Can I use gparted without reboot?
you should be able to change data partitions without a reboot, provided they are not mounted (changing mounted partition == bad)
changing the OS partition or swap partition should be done from a live cd however as they can't be effectively unmounted while the system is booted.
just make sure to edit your /etc/fstab when done to reflect the changes to your partition structure otherwise you will run into problems when you DO reboot the system