I have another thread open that started with a previous problem, to which I now am stuck at a different spot. Ultimately I am trying to install Ubuntu 12.04 LTS as dual boot option with Windows 7 on my Toshiba Satellite. Scanning my partitions on Ubuntu's Gparted shows that I may have a corrupted or damaged NTSF(C: ). To make a long story short, I can't succesfully run chkdsk /f or chkdsk /r (C: ) I type it in command, and I get cannot lock current drive .....volume in use etc. Do you want to run on restart. I select Y, and restart. BUT nothing happens on reboot. I've read that antivirus program could be the culprit. I've done a number of things to no avail. Finally I am at msconfig>run as admin>services tab>uncheck avgids and avg watchdog>click ok, and restart. But they are both checked and running again! I did , however, succesfully disable AVG related files in Startup tab, but services not staying disabled. I'm not even sure I am on the right track. You can see I am way in far left field from where I started.