I was looking at this comment and Marty Fried says "In fact, you can't even do anything to any partition with a lower number than a mounted partition." referring to changing sizes of this partitions.
Since I didn't want to make unrelated comments to that answer I decided to ask a new question here.
Why can't changes to partitions with number bellow the mounted one be done? I understand why changes in the mounted one can't be done, but not this.
Thanks!