if I format my usb key with an extX file system, copy some files on it and then give it to a friend for him to add files or modify existing one on this key, then he is rejected by its own system. Because its User ID (UID) nor GID are the same as mine on my machine.
How to get rid of this limitation? Is it possible to disable user rights on a ext2/ext3 partition?
Of course, I would really like not to rely on any other file system.