I am using Samsung Galaxy S3 (I9300) for a while now. I have rooted the device, removed the stock ROM and replaced it with CM11. Of late, I have been having Camera FCs, poor battery back up and slow down in apps (I though it was due to low availability of internal memory - 1 GB out of 11.5 GB). I tried clearing several folders from internal memory. Since the results weren't satisfactory, I decided to re-install the OS by doing a factory reset.
Now that I have done it, to my surprise, the internal memory was still not completely cleared. Android was still reporting as 4.5 GB available, out of 11.5 GB. When digging little deeper, I found that it was due to my old user data folders still residing on the phone. They were available under
\emulated\0 and also
\emulated\legacy. I initially assumed it would be present in my external SD card and \emulated\0 possibly could be just a symlink to it. To clear up the doubt, I removed the SD card from the phone and rebooted it. But, I still see the files in
\emulated\0. I again tried to do a
Factory Reset, but nothing has changed.
Though, I can just delete the
\emulated\legacy folder and go about installing a different ROM. I am trying to understand what actually has happened (how to correctly fix it) and if it could happen again, or if it could be something due to me fiddling around with any OS level settings. Any explanation as to why/how the duplicate files are created and how to fix it for good, will be much appreciated.