is01 mkfs2 mount loop

# mke2fs system.img
mke2fs system.img
mke2fs 1.40.8 (13-Mar-2008)
system.img 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)
65536 inodes, 262144 blocks
13107 blocks (5.00%) reserved for the super user
First data block=1
Maximum filesystem blocks=67371008
32 block groups
8192 blocks per group, 8192 fragments per group
2048 inodes per group
Superblock backups stored on blocks:
        8193, 24577, 40961, 57345, 73729, 204801, 221185

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

This filesystem will be automatically checked every 35 mounts or
180 days, whichever comes first.  Use tune2fs -c or -i to override.
#
# mount -o remount,rw / /
mount -o remount,rw / /
# mkdir /system2
mkdir /system2
# mount -o loop -t ext2 system.img /system2
mount -o loop -t ext2 system.img /system2
# mount
mount
rootfs / rootfs rw 0 0
tmpfs /dev tmpfs rw,mode=755 0 0
devpts /dev/pts devpts rw,mode=600 0 0
proc /proc proc rw 0 0
sysfs /sys sysfs rw 0 0
tmpfs /sqlite_stmt_journals tmpfs rw,size=4096k 0 0
tmpfs /obex_data_tmp tmpfs rw 0 0
tmpfs /bkrs_data_tmp tmpfs rw 0 0
tmpfs /sphinx_tmp tmpfs rw 0 0
tmpfs /sdservice_tmp tmpfs rw 0 0
/dev/block/mtdblock7 /sqlite_journals yaffs2 rw 0 0
tmpfs /sh_tmp tmpfs rw 0 0
/dev/block/mtdblock5 /system yaffs2 ro 0 0
/dev/block/mmcblk0p1 /data ext3 rw,nosuid,nodev,errors=continue,data=ordered 0 0

/dev/block/mmcblk0p2 /data/ro ext3 ro,nosuid,nodev,data=ordered 0 0
/dev/block/mtdblock1 /cache yaffs2 rw,nosuid,nodev 0 0
/dev/block/loop0 /system2 ext2 rw,errors=continue 0 0