Internal Storage

Termux Session

First open new Termux session (Swipe from left corner to right) and type:

termux-setup-storage

Now it will ask you for Storage permission. Allow the Storage permission.

Open Start File

Once you are done with it type:

nano start-(distroname).sh

Search

Now search for line:

#command+=" -b /sdcard"

Edit

If you find this line, then remove it and change it to

command+=" -b /sdcard"

Add the line

If you don't find the line then add the above mentioned line as shown in the screenshot below.

Save

Once you are done with it press Ctrl+X and then press Y and then Enter. Now start your linux system and do cd / . Now you will be able to see a folder sdcard which means you have successfully mounted your Internal Storage.