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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 100 GB. 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?