I had a text document notepad file in my windows7 with some text written in it then I wrote some more text in ubuntu in that file but now it seems that I have lost all the texts since it shows random characters mostly like /00/00/00/ do you have any idea how I can recover my information again?tnx
You see random characters when trying to read the text document back in Microsoft's Notepad, right?
Did you trying reading it back from Ubuntu? (if this works, then it's probably Notepad's fault) If you can't check from Ubuntu, try installing Notepad++ in Windows, and reading your text document with it.
As a general rule, I would recommend avoiding Microsoft's Notepad in Windows, and using a more serious alternative, Notepad2 or Notepad++ for instance. (Notepad2 is easier to get into, but replaces Microsoft's Notepad in Windows' menus) It will save you from a lot of pain when being in non Windows-only environments.