I wanted to create more space for Ubuntu on my hard disk in favor of my windows partition. I booted the livecd and resized the ntfs partition to 100gb. Then I wanted to resize my ubuntu (ext4) partition to fill up the created unallocated space.

A screenshot of my current disk. (With the livecd there's no 'key' icon after sda6)

My first thought was just right click on sda6 ? move/resize ? done. Unfortunately I cannot resize or move the partition. However I can resize the ntfs partition.

I guess it is because the extended sda4 partition is locked. I couldn't see an unlock possibility though…

So how do I resize the ext4 partition anyway, probably by unlocking the extended partition, but how?

Thanks in advance.