操作方法
1，获取root权限
2，下载RE管理器【点此下载】，进入root fold的etc文件夹，找到vold.fstab文件，长按弹出菜单，选最后一项文件编制器(Open in TextEditor)
3，找到如下语句 dev_mount sdcard /storage/sdcard0 emmc@fat /devices/platform/goldfish_mmc.0 /devices/platform/mtk-msdc.0/mmc_host dev_mount sdcard2 /storage/sdcard1 auto /devices/platform/goldfish_mmc.1 /devices/platform/mtk-msdc.1/mmc_host 改成 dev_mount sdcard /storage/sdcard1 emmc@fat /devices/platform/goldfish_mmc.0 /devices/platform/mtk-msdc.0/mmc_host dev_mount sdcard2 /storage/sdcard0 auto /devices/platform/goldfish_mmc.1 /devices/platform/mtk-msdc.1/mmc_host
4，改好保存，退出重启 操作并不复杂，同志们走起!改完文件源文件会生成vold.fstab.bak，不对劲就改回来吧。