in other words, you'll see something like: You run the 'mount' command from inside a root adb shell. One last thing: The command structure looks different from your average adb command because it's not an adb command. Normally you won't have to reverse the command once you've tested your change and made sure everything is in order, you can just reboot your tablet and the /system partition will mount read-only. You can then do whatever maintenance you need to. It momentarily disconnects the partition from the file tree and reconnects it with write permissions. The command you're asking about does the same thing, only manually. No matter what you might have heard.) When Android needs to write to or otherwise modify the /system partition it unmounts the partition, remounts it with read and write permissions, does its thing and then re-unmounts and re-remounts it as read-only. The default for the /system partition is read-only, so some fumble-fingered ignoramus can't go in there and just accidentally delete a bunch of important stuff. When you mount a disk partition, among other things it's assigned a location on the tree and a set of permissions. 'Mounting' is the process by which a disk partition is added to the Android file tree and made ready for use. If I don't I'm sure someone will kindly and gently set me straight. I don't know much about Android/FireOS internals, although I'm pretty familiar with Linux and Android is based on Linux, so hopefully I'll get this right.

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