My dual-boot machine has partitions as follows: sda1 50 GB NTFS sda2 15 GB unallocated sda3 20 GB ext3 sda4 20 GB ext4 I would like to allocate the unused space on sda2 to my Ubuntu partition on sda4, hopefully leaving the other two partitions untouched, leaving this configuration: sda1 50 GB NTFS sda3 20 GB ext3 sda4 35 GB ext4 Is this possible? If so, how can it be done, preferably using GParted?