Hey, First of all Read The Warning
1. Download any ROOT FILE EXPLORER.... I used ROOT EXPLORER.
2.Download the "vold.fstab.txt" file from below.
3.Go to "System/etc" and rename the OLD "vold.fstab" file to ''vold.fstab.bak'.
4.Copy the downloaded file here, and Rename it "vold.fstab"
5.Restart and enjoy.
Procedure:WARNING1. Your device must be ROOTED.
2.Take a backup with TWRP/CWM or any other recovery.
3.This is ONLY FOR MICROMAX A91.
1. Download any ROOT FILE EXPLORER.... I used ROOT EXPLORER.
2.Download the "vold.fstab.txt" file from below.
3.Go to "System/etc" and rename the OLD "vold.fstab" file to ''vold.fstab.bak'.
4.Copy the downloaded file here, and Rename it "vold.fstab"
5.Restart and enjoy.
NoteFirst copy EACH AND EVERY folder from your phone memory to the SDCARD so that all your apps keep on working after swapping.