Testing ext-root rootfs on SD Card for PogoPlug Mobile

testing extroot pogoplug.sh

# This commands executed on OpenWrt on 128mb internal Flash on a PogoPlug Mobile
# Yet something is missing to make it work, but I think I am close

# Install some stuff
opkg install usbutils
opkg install fdisk
opkg install kmod-usb-storage block-mount kmod-fs-ext4
opkg install e2fsprogs

# List Partitions on SD
fdisk -l /dev/mmcblk0

# Clean Partition Table
dd if=/dev/zero of=/dev/mmcblk0 bs=64k count=1

# Create 1 entire primary partition
cat <<'__EOF__' | fdisk /dev/mmcblk0
n
p
1


w
q
__EOF__

# list partitions on SD
fdisk -l /dev/mmcblk0

#Disk /dev/mmcblk0: 7.4 GiB, 7948206080 bytes, 15523840 sectors
#Units: sectors of 1 * 512 = 512 bytes
#Sector size (logical/physical): 512 bytes / 512 bytes
#I/O size (minimum/optimal): 512 bytes / 512 bytes
#Disklabel type: dos
#Disk identifier: 0xd69f6a7f
#
#Device         Boot Start      End  Sectors  Size Id Type
#/dev/mmcblk0p1       2048 15523839 15521792  7.4G 83 Linux

mkfs.ext3 /dev/mmcblk0p1 -L rootfs

# Download OpenWrt rootfs
cd /tmp
wget http://downloads.openwrt.org/chaos_calmer/15.05.1/kirkwood/generic/openwrt-15.05.1-kirkwood-generic-rootfs.tar.gz
wget http://downloads.openwrt.org/chaos_calmer/15.05.1/kirkwood/generic/openwrt-15.05.1-kirkwood-zImage
wget http://downloads.openwrt.org/chaos_calmer/15.05.1/kirkwood/generic/md5sums

# check that zImage and rootfs.tar.gz are OK
md5sum -c md5sums 2>/dev/null | grep OK

# create mount point
mkdir /mnt/mmcblk0p1
# mount SD partition
mount /dev/mmcblk0p1 /mnt/mmcblk0p1
# extract rootfs.tar.gz to ext rootfs at /mnt/mmcblk0p1
cd /mnt/mmcblk0p1
tar xvzf /tmp/openwrt*rootfs.tar.gz
# create boot directory and copy those files.
mkdir boot
cp /boot/zImage ./boot/zImage
cp /boot/kirkwood-pogoplug_v4.dtb ./boot/kirkwood-pogoplug_v4.dtb
# unmount
sync
cd ~/
umount /mnt/mmcblk0p1
# reboot to test
reboot