Set micro SD card to read-only for Android OS
I'm trying to write-protect a micro SD card so that the android OS (or any apps on a tablet) can't delete files off of the SD card.
I've tried setting it to read-only in Windows, but I can still add/delete files from Android via 'My Files' or the Video player.
Is there a file system that is inherently read only on Android that I could use? Or any other way to set the microSD to read only?
I'm trying to distribute content to students via these SD cards, that I don't want accidentally deleted off of them. Thanks!