Thanks J. R. Okajima for your patience and time.
I don't think it correct.
What you want to do is
    # mount -o remount,rw /rootfs
     make ext3 /rootfs writable.
I did run the above command on my shell
after this I get the message below on running mount command.
root@dvr:/etc# mount
rootfs on / type rootfs (rw)
none on /dev type devtmpfs
(rw,relatime,size=115240k,nr_inodes=28810,mode=755)
/dev/mmcblk0p1 on /rootfs type ext3
(rw,noatime,errors=continue,user_xattr,acl,barrier=0,data=writeback)
aufs-tmpfs on /rw type tmpfs (rw,relatime)
Now after this command file created in home directory is missing after
reboot.I tried creating changes in /etc folder same observation.
Ratheendran
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