Disclaimer: Do this at your own risk, I am not responsible for any damage to your device
Two zips i have uploaded
You need to have rooted device for this
download these two zips to your SDCard
open file explorer of yours
go to /system/etc
copy vold.fstab and vold2.fstab to a safer place in your sd card - very important
copy the vold.fstab and vold2.fstab extracted from mod.zip to /system/etc
change permission to 0655 - rw-r-r to both files
reboot the device normally
see the sdcard is changed.
if you have any issues in mounting, you can always replace the original you copied to safer place earlier and reboot and this will resolve.
This is especially useful when you want apps that mandates store to the internal card and you lack space in that and much more.
Dont just leech the post, kindly press the thanks button, if this has helped