I've got a installation of Ubuntu running on a 3TB disk, during the installation I chose to use all of the available space (I don't remember if I checked LVM).
What I want to do now is shrink the partition to 2TB, and have 1TB as unallocated space , as eventually it will be used for storage for the main OS. I don't know how to do this, as it's the actively used partition, I tried to "Move/Resize" in Gparted, it let me go to 316mb then wouldent let me go further.
Could you please tell me:
1) How to shrink my hard disk to 2TB
2) How to save that unallocated space as storage, and "Mount" it to my Primary OS.
If you require further info, please ask.. Otherwise, please help!