is it possible to resize partitions?

Hi,
I tried to resize partition c: with paragon hd manager. The operation seemed to be ok, but after that
I couldn’t boot anymore.
I managed to restore my system using ctm, but the partitition size is back to its original state.
So it seems impossible to resize partition, at least with this tool. Would I be more successful with gparted?
(guess not, but if someone has a definitive answer about this).

Thanks,
papa

You should uninstall CTM to do these things. CTM remembers the MBR and restores it. CTM is incompatible with any software of that kind.
In fact it is incompatible with any piece of software that deals hard disk.