手机大神请进

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## Vold 2.0 Generic fstab
## - San Mehat (san@android.com)
##
#######################
## Regular device mount
##
## Format: dev_mount <label> <mount_point> <part> <sysfs_path1...>
## label - Label for the volume
## mount_point - Where the volume will be mounted
## part - Partition # (1 based), or 'auto' for first usable partition.
## <sysfs_path> - List of sysfs paths to source devices
######################
#storage_struct = series, "/mnt/sdcard/extStorages"
#storage_struct = parallel
{
supported_exfat = yes
android_secure_containers = enable
}
dev_mount sdcard /storage/extSdCard auto /devices/platform/msm_sdcc.1/mmc_host/mmc1/
#usb host device
{
media_type = usb
supported_exfat = yes
}
dev_mount sda /storage/UsbDriveA auto /devices/platform/msm_hsusb_host/usb
#usb host device
{
media_type = usb
supported_exfat = yes
}
dev_mount sdb /storage/UsbDriveB auto /devices/platform/msm_hsusb_host/usb
#usb host device
{
media_type = usb
supported_exfat = yes
}
dev_mount sdc /storage/UsbDriveC auto /devices/platform/msm_hsusb_host/usb
#usb host device
{
media_type = usb
supported_exfat = yes
}
dev_mount sdd /storage/UsbDriveD auto /devices/platform/msm_hsusb_host/usb
#usb host device
{
media_type = usb
supported_exfat = yes
}
dev_mount sde /storage/UsbDriveE auto /devices/platform/msm_hsusb_host/usb
#usb host device
{
media_type = usb
supported_exfat = yes
} 这是我的手机vold.fastab请问改哪两个可以吧内置sd卡和外置sd卡互换.