Why My Android has another storage partition called USB storage

[AC Question]

Hello,

Why My Android has another storage partition called USB storage where I can access from My Computer
I have 2 inbuilt storage's. 1 is for System and Apps(1.84GB) and 2 is for USB Storage(1GB). When I'm installing apps it will installing to system space. But I cannot access that 1GB. After I connect my phone to pc. It will popup that 1GB storage like pen drive. I can copy anything to that 1GB space. But from phone can't access.

So I want to merge this 1GB in to System, Because my space running out when I'm installing my apps.Please help me to slove this issue.

Sammy

 

[anon(632115)]

This is the file structure for older devices. It is not possible to merge these

 

[jeffhaskins]

You can, however create a second partition on your external SD and use link2sd app from playstore to manage your second partition. This does require root access, but It will help to eliminate internal storage restrictions.