I have fixed it thanks for help. Just boot backtrack from usb & edited the fstab file & deleted all other enteries except \proc & swap entry. this fixed the problem. But i wonder i was unable to edit or save any file using gedit on my root partition as root user. i will post that problem later. Sorry for late reply bcz problem with internet. thanks for help. Regards Navdeep Singh <div class="gmail_quote">On Fri, Jan 20, 2012 at 12:44 PM, Navdeep Singh Sidhu <<a href="mailto:navdeepsingh.sidhu95@gmail.com">navdeepsingh.sidhu95@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello everyone, recently i had installed many tools on my ubuntu 11.10 like gparted , oracle 11g xe, & other many more. but i'm facing problem like read only disks with other partition which have ntfs file system. i can't save my files on them or write any data to them. Have i changed any kernel parameters or any group policy accidently etc ?Can some body help me regarding isssue? How to fix it? Thanks in advance. Regards Navdeep Singh </blockquote></div>