In some cases, it would be useful to be able to hide internal partitions that don't need to be mounted, be it in a Live CD/Live USB, or in an installed system.
For example, we do an Edu version based on a distribution with Lxde in it, so that schools can use it with old machines if needed. But we don't want to put the other partitions at risk with children using the system, who might want to explore too much all the available directories seen in the left column of the file manager. Else, we don't want to use another file manager that don't show partitions, because if we uninstall PCManFM we don't have a reliable tool left to manage the desktop background and icons. And if we fix permissions to not be able to mount theses partitions, we will just get "permission denied" window message, which is efficient but not quite elegant.
Hiding partitions of other Operating Systems does not seem possible actually with PCManFM at the moment : would it be possible to add a "hide other partitions" feature ?
Thanks a lot,