Android 4.4 Kitkat and second external storage
android, android-4.4-kitkat, android-sdcard
Solution
Your analysis is correct, other than assuming that primary external storage is `/sdcard` (the exact path varies by device, OS level, and user account for Android 4.2+ tablets).
Here are some blog posts that I wrote recently on external storage and removable ("secondary external") storage.
Problem
There has been written a lot about Kitkat external sdcard write permission but it's not clear to me how it works. Unfortunately I don't have Kitkat device with sdcard slot. Question is, can I write to secondary external storage at all? Based on the docs. Apps must not be allowed to write to secondary external storage devices, except in their package-specific directories If in understand it, If I don't have permission I can write to the app specific folder on primary external storage `/sdcard/Android/data/package/...` and to the app specific folder on secondary external storage `/extSdcard/Android/data/package/...` and with `WRITE_EXTERNAL_STORAGE` I can write to all locations on primary external storage `/sdcard/*` but I can't write to any location on secondary external storage (except app specific folder)? Thanks for all answers!