Android phone SD card MBR - SCH-R720

I wanted to find out the storage format of my SCH-R720 Android phone.  I wanted to find out the default file and folders that are created by the phone, the file type it uses, and the VBR signature of the Android formatted storage device.

Model Number: SCH-R720

Android Version: 2.3.4

Baseband Version: S:R720.06 x.EH02

Kernel Version: 2.6.35.7

Build number: GINGERBREAD.EH02

Wipe the storage device and fill it with zeros

C:\fau-1.3.0.2390\fau\FAU.x86>wipe -w 00 \\.\physicaldrive1

Forensic Acquisition Tools, 1, 3, 0, 2390 wipe, 1, 3, 0, 2390

Copyright (C) 2002-2009 GMG Systems, Inc.

After the wipe, I have verified the wipe results by searching for anything else, but zeroes on the drive in FTK Imager regular expression ( [^\x00] ).

Formatting

jumpcode                         no. of fats               sectors per track           nt reserved                      volume/partition name
oem/id name                     root entries             no. of heads               extended boot signature         fat type
bytes per sector                 total sectors            hidden sectors              extended boot signature        executable signature
sectors per allocation          media type             total sectors                extended boot signature
reserved sectors                sectors per fat              drive id                          volume serial number
Formatting the the 2GB MicroSD storage device ( by default the phone formatted the drive to FAT16 ) resulted in the following default file structure ( the RED entry is a deleted entry ).  The LOST.DIR is the first directory entry and the volume was no name associated with it by default, thus LOST.DIR create time can be considered the initial format time/date.

Filename	Full Path	Size	Created	Modified
[root]	\[root]\	16384
VBR	\VBR	512
[unallocated space]	\[unallocated space]\	0
file system slack	\file system slack	512
FAT1	\FAT1	122368
FAT2	\FAT2	122368
LOST.DIR	\[root]\LOST.DIR\	32768	2012-Nov-30 00:48:04	2012-Nov-30 00:48:04
.android_secure	\[root]\.android_secure\	32768	2012-Nov-30 00:48:04	2012-Nov-30 00:48:04
DCIM	\[root]\DCIM\	32768	2012-Nov-30 00:48:04	2012-Nov-30 00:48:04
Android	\[root]\Android\	32768	2012-Nov-30 00:48:05	2012-Nov-30 00:48:04
DiskCacheIndex-1701006599.tmp	\[root]\DiskCacheIndex-1701006599.tmp	0	2012-Nov-30 00:48:08	2012-Nov-30 00:48:08
data	\[root]\Android\data\	32768	2012-Nov-30 00:48:05	2012-Nov-30 00:48:04
com.cooliris.media	\[root]\Android\data\com.cooliris.media\	32768	2012-Nov-30 00:48:05	2012-Nov-30 00:48:04
cache	\[root]\Android\data\com.cooliris.media\cache\	32768	2012-Nov-30 00:48:06	2012-Nov-30 00:48:06
local-album-cache	\[root]\Android\data\com.cooliris.media\cache\local-album-cache\	32768	2012-Nov-30 00:48:06	2012-Nov-30 00:48:06
local-meta-cache	\[root]\Android\data\com.cooliris.media\cache\local-meta-cache\	32768	2012-Nov-30 00:48:05	2012-Nov-30 00:48:04
local-skip-cache	\[root]\Android\data\com.cooliris.media\cache\local-skip-cache\	32768	2012-Nov-30 00:48:05	2012-Nov-30 00:48:04
local-image-thumbs	\[root]\Android\data\com.cooliris.media\cache\local-image-thumbs\	32768	2012-Nov-30 00:48:06	2012-Nov-30 00:48:06
local-video-thumbs	\[root]\Android\data\com.cooliris.media\cache\local-video-thumbs\	32768	2012-Nov-30 00:48:06	2012-Nov-30 00:48:06
chunk_0	\[root]\Android\data\com.cooliris.media\cache\local-album-cache\chunk_0	10	2012-Nov-30 00:48:06	2012-Nov-30 00:48:06
index	\[root]\Android\data\com.cooliris.media\cache\local-album-cache\index	44	2012-Nov-30 00:48:06	2012-Nov-30 00:48:06
index	\[root]\Android\data\com.cooliris.media\cache\local-image-thumbs\index	18	2012-Nov-30 00:48:08	2012-Nov-30 00:48:08

Next time, I will explore picture and video storage formats and the reliability of the "Erase SD card" feature the phone provides.  I'm curious to find out if that option is a format or a wipe utility.