How to Get an Android Device Image?

1) Make /mnt/sdcard writable

mount -o rw,remount /sdcard

chmod 777 /mnt/sdcard

2) Get mkfs.yaffs2 from http://code.google.com/p/android-group-korea/downloads/detail?name=mkfs.yaffs2.arm.
3) adbpush mkfs.yaffs2.arm /mnt/sdcard/mkfs.yaffs2

4) adb shell

5) cd /

6) chmod 755 /mnt/sdcard/mkfs.yaffs2

7) Get all content under /datainto a YAFF(Yet another Flash File System) image filedata.img.

/mnt/sdcard/mkfs.yaffs2 /data data.img

8) adb pull /mnt/sdcard/data.img

9) Then, download YAFFEY(Yet Another Flash File (System) Editor YEAH!) from
http://code.google.com/p/yaffey/

10) Then, run YAFFEY to browse the data.img file.