mardi 30 août 2016

How does moving apps between "internal app storage" and "sd card" work o 4.4.2?

Hi!

I have a rooted A3500F and cannot figure out which partitions and directories are involved in the aforementioned operation. What the system is showing is very confusing, e.g. with Google Earth:

1) installed in "internal app":
settings: storage available = 2.55 GB, apps (data & media )= 8.31 GB, system = 2.92 GB
app info: total = 206 MB, app =~ 26 MB, data = 180 MB

2) installed in "sd card":
settings: storage available = 2.59 GB, apps (data & media )= 8.32 GB, system = 2.92 GB
app info: total = 223 MB, app =~ 43 MB, data = 180 MB

So system and "app data " do not change. But the rest in the "app info" does not add up! :confused:
First it total + app = 232 MB whereas on sd it amounts to 266. Where the extra 34 MB comes from? Thin air? :)

This is very confusing and the system developers did really poor job in breaking down these amounts for users...

I was able to figure out that sdcard = /data/media/0 = /storage/emulated/0 = /mnt/sdcard and possibly "internal app" is somewhere on /data/media/? /data/app? /data/cache? /data/system?

I wonder what kind of hard limit this "moving" operation is overcoming if everything seems to occur on the "/data" partition and the "/system" does not change? Why is it available in the "app" setting? I use AIO tool to make such move in batch but I'm not sure of the benefits?

Also the "Apps" setting shows 2.9 GB free for the "Downloaded" section and 2.6 GB free for the "SD card" - where do these numbers come from? (it shows in both cases 10GB used and I know that /system takes up 3GB)

It's also weird on my Xperia C1505, e.g. app info storage about AOI Toolbox shows: total 4.4 MB, app on phone 6.17 MB and data on phone 4.4 MB. How could it be that "total" <> "app + data" ?! What then the "total" means?

Apps:
Downloaded / "Phone memory": 643 MB used 96 MB free (total of 740 results from what?)
Internal storage: 592 MB used 1.4 GB free
Running / RAM: 363 MB used 46 MB free (where did 100 MB of RAM go?)
All / "Phone memory": 643 MB used 96 MB free

How are these numbers related to the specs: 0.5 GB RAM, 4 GB internal ?

This is very confusing!

Is this all somehow related to the cache for running apps?

I tried searching for answers on various forums but did not find a good explanation, where it would be simply, unquestionably stated between exactly which directories or partitions this "move" is done.

I would greatly appreciate your help with this problem.

Cheers!


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