關於 vold.fstab 修改問題

我看不懂怎麼修改...怕會把手機用壞   


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dev_mount sdcard /storage/sdcard0 auto /devices/platform/msm_sdcc.1/mmc_host
dev_mount emmc  /storage/sdcard1  20 /devices/platform/msm_sdcc.3/mmc_host/mmc0
dev_mount emmc /storage/emmc 19 /devices/platform/msm_sdcc.3/mmc_host/mmc0


我手機好像有三個空間...從系統→儲存空間  看到的是以下三種名稱...

1.內部儲存空間　　2.SD卡　　3.手機內部記憶體

麻煩各位大大教我如何修改   

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