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I'm using Ubuntu 16.04. I can't create new partition on sda 2, GParted shows 450 GB unused but still I can't do partition. Please let me know what's the problem?

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  • You will need to shrink a partition first. Currently, the whole disk is used by (nearly empty) partitions. Shrinking a partition (resizing) will make room for a new one. – Jos May 17 '18 at 12:00
  • Little key icons say partitions are mounted. You cannot change mounted partitions. Generally best to use gparted from Ubuntu live installer or use a gparted live flash drive, so all partitions are unmount. Live installer may mount swap, so umount it with swap-off if necessary. – oldfred May 17 '18 at 15:37
  • sda can have partitions added, since it's the whole drive. sda2 (with a number at the end) is a partition. It can't have partitions added to it. You have to make sda2 smaller and then use the empty space left over to add a new partition. – Chai T. Rex May 19 '18 at 8:15
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sda2 is already a partition which is being used as your main file system formatted as ext4. IT IS NOT UNALLOCATED SPACE Gparted is only telling you that it has 450GB unused.

However if you want to add a new partition , you would have to shrink your current sda2 partition and then create a new partition in the new UNALLOCATED SPACE

https://www.howtoforge.com/partitioning_with_gparted

https://www.youtube.com/watch?v=HVHXdH7Wo3s

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