kalpeshb9

I have MZ-N1. I was recording a very important discussion and accidently the power cord was pulled out by someone's mistake. Since, the discussion was going on, I quickly put the power cable back and pressed recording again. Now the recorder shows only 2 new tracks which are of 5 minutes but it doesn't show old track which was 90 min long. How do I recover that recording? Please help... Its very important recording. - KB