mount loopback device to /system on IS03 Deckard protect

# dd if=/dev/zero of=/data/system.bin bs=1048576 count=30
dd if=/dev/zero of=/data/system.bin bs=1048576 count=30


30+0 records in
30+0 records out
#
# /data/local/mke2fs_recvy /data/system.bin

mke2fs 1.40.8 (13-Mar-2008)
system.bin is not a block special device.
Proceed anyway? (y,n) y
y
Filesystem label=
OS type: Linux
Block size=1024 (log=0)
Fragment size=1024 (log=0)
7680 inodes, 30720 blocks
1536 blocks (5.00%) reserved for the super user
First data block=1
Maximum filesystem blocks=31457280
4 block groups
8192 blocks per group, 8192 fragments per group
1920 inodes per group
Superblock backups stored on blocks:
        8193, 24577

Writing inode tables: done
Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 20 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.
#
#
# losetup /dev/block/loop0 /data/system.bin
losetup /dev/block/loop0 /data/system.bin
# cd /dev/block
# ls -l
ls -l
...
brw-------    1 0        0          7,   0 Apr  3 09:38 loop0
...
# mv mtdblock4 mtdblock4-
# mknod mtdblock4 b 7 0
# mount /dev/block/mtdblock4 /system
# ls /system
ls /system
lost+found