Android/partitions

Some quick initial notes on partitions.

On my android tablet, the nand is devided into 9 partitions. Sizes are how they are on this devices, they should be used as an indication only.

id	dev/block/*	Size	Name	Description
0	nanda	32MiB	bootloader	Files to assist the bootloader. Think battery status images etc. also u-boot.bin lives here.
1	nandb	32MiB	env	Enviroment to assist u-boot.
2	nandc	64MiB	boot	Holds the kernel (and its ramdisk) in raw form
3	nandd	1GiB	system	Android's /system partition
4	nande	32MiB	misc	Partition used to pass data amongst various stages of the boot chain (e.g. boot into recovery mode, fastboot etc)
5	nandf	64MiB	recovery	Android's recovery partition, strangly this is on nandg!
6	nandg
7	nandh
8	nandi

Allwinner changed the layout a little some time after changing to Android ICS 4.0. Previous versions of the Android firmware would use partition with field "user_type" of 0 or 2. However, Allwinner appear to have added type 1.

The following is the partition layout from Mele-v1.3BETA Android firmware:

id	dev/block/*	Size	Name	Type	Description
0	nanda	16MiB	bootloader	vfat	Files to assist the bootloader. Think battery status images etc. also u-boot.bin, script.bin and .ini lives here
1	nandb	16MiB	env	raw	Enviroment to assist u-boot.
2	nandc	32MiB	boot	raw	Holds the kernel (and its ramdisk) in ANDROID mkbootimg form
3	nandd	512MiB	system	ext4	Android's /system partition
4	nande	1.5GiB	data	ext4	Android /data partition
5	nandf	16MiB	misc	raw	Partition used to pass data amongst various stages of the boot chain (e.g. boot into recovery mode, fastboot etc)
6	nandg	32MiB	recovery	raw	Android's recovery partition
7	nandh	128MiB	cache	ext4	Mounted as /cache and appear to contain backup information
8	nandi	16MiB	private	vfat	Mounted as /mnt/private
9	nandj	512MiB	sysrecovery	raw
10	nandk	944MiB	UDISK	vfat	Mounted by vold as /mnt/sdcard and /mnt/secure/asec