I don´t know but I guess it is the way you mounted the drive and you will probably have to modify the commands and or its parameters as you are in a read only mode. Maybe, iamwhatiseem knows more.
Pretty much but when I do (exactly) as the online Ubuntu help page says it tells me "no such directory exists" yet I can see the directory and path.
If push comes to shove when I finally get my new build done I'll put the new HDD in my current Windows machine, turn my current Windows machine into my new Linux machine and donate or sell my old Linux machine.
My new Windows gamer will have SSDs instead of HDDs, M.2 (PCIe) form factor.
As far as I can see you must create such a directory at first with a command like:
sudo mkdir /media/hdd
If you want to mount a ntfs disk you must add an -t paramenter to the mount command:
-t ntfs-3g /def/sda/media/hdd
sda and hdd are variable, hdd is just an example, you can call it anyhow, or it is the name of the disk.