[FR] Storing config files priority...

[J013k]

While I don't have a problem with loading config file,
something "strange" for me is happening while saving config file.

Here is how it should work:

-> When saving (5443a19):

1. Try the device that the config file was loaded from.
2. If config could not be saved, try the device that OPL was booted from (supported devices only).
3. If config could not be saved, try all supported devices.
4. Give up.

It makes me wonder a bit:

When saving:
2. If config could not be saved, try the device that OPL was booted from (supported devices only).

In my scenario when OPL will be launched from HDD.
There will be no MC. Only HDD+USB.
I additionally initialize HDD, games list was shown.
Settings will be saved to USB (Settings saved to mass:).

Expected behavior
HDD should have higher priority than USB, because OPL was launched from it (HDD).

[KrahJohlito]

Closing as dupe of #1390