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I recently installed ubuntu on a new hard disk with several ext4 partitions and 1 fat32 partition for installing windows in the future.
I am able to view all partitions in File Manager. The partitions also get mounted when I click on them. However I am not able to create any files or folders in the ext4 partitions.
It is strange that I am able to create files or folders on the Fat32 partition. Why does Ubuntu make it so complicated?