Default [Q] How to switch SDcard as the Internal Memory?

This is my Vold , can someone help me so that i can use my sdcard as the internal memory?


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# LGE_CHANGE For MTP
#jungyub.jee@lge.com sdcard path change /mnt/sdcard/external_sd ->/storage/external_SD
#dev_mount sdcard2 /mnt/sdcard/external_sd auto /devices/platform/msm_sdcc.3/mmc_host
dev_mount sdcard2 /storage/external_SD auto /devices/platform/msm_sdcc.3/mmc_host
dev_mount sda /storage/USBstorage auto /devices/platform/msm_hsusb_host
dev_mount sdb /storage/USBstorage2 auto /devices/platform/msm_hsusb_host
dev_mount sdc /storage/USBstorage3 auto /devices/platform/msm_hsusb_host
dev_mount sdd /storage/USBstorage4 auto /devices/platform/msm_hsusb_host
dev_mount sde /storage/USBstorage5 auto /devices/platform/msm_hsusb_host
dev_mount sdf /storage/USBstorage6 auto /devices/platform/msm_hsusb_host