I have an external hard drive. I need to put an mp4 file from ~/Documents onto the hard drive (so onto /media/naomi/SeagateByMe, since I named the external hard drive SeagateByMe). However, when I run mv safetyInAngerFirstChunk.mp4 /media/naomi/SeagateByMe I then get mv: inter-device move failed: 'safetyInAngerFirstChunk.mp4' to '/media/naomi/SeagateByMe/safetyInAngerFirstChunk.mp4'; unable to remove target: Read-only file system
So I tried a bunch of stuff based on other people's posts (mostly "mount" command with a bunch of different options, and also the "killall Thunar" thing), none of which worked. One concrete thing I don't understand, which is what I'd like an answer to on here, is why this happens:
Command: sudo umount /media/naomi/SeagateByMe
Command: sudo umount /dev/sda2
------> Output: umount: /dev/sda2: not mounted.
Command: sudo mount -o rw /dev/sda2 /media/naomi/SeagateByMe
Command: mount | grep "Seagate"
------> Output: /dev/sda2 on /media/naomi/SeagateByMe type hfsplus (ro,relatime,umask=22,uid=0,gid=0,nls=utf8)
Specifically what I don't understand is why it still says "ro" in that last output line, even though I just did "-o rw" without any errors popping up. Am I misunderstanding something, and those two things aren't related? Also, is the "ro" in that mount output line talking about the same "Read-only file system" error from the beginning, or are those two separate issues?
The reason that this happened in the first place (I'm pretty sure) is that I opened kdenlive as root so that I could render a video straight to the external hard drive (which seemed to require root permissions) and then messed up some double versus single quotes in the file path that I told it to render to (yes, I know, "don't use random software as root, that's dumb, things will get messed up, blah blah blah" I just have incompetent moments sometimes!). Because I used the "mv" command with the exact same format as above (just with a different USB device and a different video file) before the kdenlive thing happened and it worked fine.
edit: I tried plugging in some other hard drives/USBs and it looks like the hsfplus ones are read-only whereas vfat ones are read-write?? Why is that?
