Creo que ya está, en cuanto pueda probar edito esto. Así ha quedado el fichero. Saludos.
# Copyright (C) 2009 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#
http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
## Vold 2.0 fstab for the Morrestown Platform
#######################
## 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
######################
# Mounts the first usable partition of the specified device
dev_mount sdcard0 /storage
sdcard1 auto /devices/pci0000:00/0000:00:04.0/mmc_host /devices/pci0000:00/0000:00:02.3/gadget/lun0
dev_mount sdcard1 /storage
sdcard0 11 /devices/pci0000:00/0000:00:01.0/mmc_host formatable
dev_mount usbdrive /mnt/usbdrive auto */block/sd