Lifechng1946 :
Can't the 128GB SD card be used to launch new apps? I can down load them, but they don't run...
OK....
We need a little backstory here.
What hardware do you have?
What "apps" are you trying to install?
What OS is this?
However...
I have a little Asus Transformer, with a 32GB eMMC drive, and a secondary 64GB SD card.
Currently, Win 10 Home.
Sure, you can install things on that SD card.
The 32GB drive is STILL too small for real use, but you can