我百度的教程vold.fatab内容不一样啊，。。。。图是教程的，

我的是这样的
# Copyright (c) 2011, Code Aurora Forum. All rights reserved.
#
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# modification, are permitted provided that the following conditions are
# met:
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of Code Aurora Forum, Inc. nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
## Vold 2.0 Generic fstab
## - San Mehat ([email protected])
##
#######################
## Regular device mount
##
## Format: dev_mount
## label - Label for the volume
## mount_point - Where the volume will be mounted
#
# part - Partition #
(1 based), or 'auto' for first usable partition.
## - List of sysfs paths to source devices
######################
#storage_struct = series, "/storage/sdcard/extStorages"
#storage_struct = parallel
{
supported_exfat = yes
}
dev_mount sdcard /storage/extSdCard auto /devices/platform/sprd-sdhci.0/mmc_host/mmc1
#dev_mount internal /storage/sdcard0 19 /devices/platform/sprd-sdhci.3/mmc_host/mmc0
#dev_mount sdcard /storage/sdcard1 auto /devices/platform/sprd-sdhci.0/mmc_host/mmc1
#usb host device
{
media_type = usb
supported_exfat = yes
}
dev_mount sda /storage/UsbDriveA auto /devices/platform/omap/musb-omap2430/musb-hdrc/usb1
#usb host device
{
media_type = usb
supported_exfat = yes
}
dev_mount sdb /storage/UsbDriveB auto /devices/platform/omap/musb-omap2430/musb-hdrc/usb1
#usb host device
{
media_type = usb
supported_exfat = yes
}
dev_mount sdc /storage/UsbDriveC auto /devices/platform/omap/musb-omap2430/musb-hdrc/usb1
#usb host device
{
media_type = usb
supported_exfat = yes
}
dev_mount sdd /storage/UsbDriveD auto /devices/platform/omap/musb-omap2430/musb-hdrc/usb1
#usb host device
{
media_type = usb
supported_exfat = yes
}
dev_mount sde /storage/UsbDriveE auto /devices/platform/omap/musb-omap2430/musb-hdrc/usb1
#usb host device
{
media_type = usb
supported_exfat = yes
}
dev_mount sdf /storage/UsbDriveF auto /devices/platform/omap/musb-omap2430/musb-hdrc/usb1
#EOF

上面少了东西

完全
看不懂啊

最好不要瞎换否则后果不堪设想