How to extend a Linux ext3 partition?

I have the following partitions on my HDD:

I want to extend my Linux partition /dev/sda6 with the unallocated space of ~1GB above it.

But when I right click on this partition the option to „resize/move” is not available. What should I do in order to obtain what I want?

Solution 1:

GParted cannot move or resize a partition if it's mounted and in use. It looks like you may be attempting to move the root partition for the currently running system you will need to use a GParted Live CD.

See Acquiring GParted on Live CD. Once you've booted with the Live CD you should be able to move and resize this partition.