I have Ubuntu 14.04 in /dev/sda1 and Fedora 25 in /dev/sda3. I want to create a partition to store my downloaded file(i.e. application, source code, book etc.).Currently, I store the file in the current partition of the working OS and to access the file from another OS just mount the partition.This solution works. But, I want to a separate partition for only this purpose and neither OS owns it, to access the file contained the partition every OS have to mount it.
How to make a partition that separated from OS?
mount;partition;dual boot