Just a word of advice. If Scandisk or chkdsk finds errors, DO NOT let them fix the errors. Go and get a good recovery program that will only copy the repair to a different drive or the CD-R's. Twice I have learned the hard way. Do not let anything write to the questionable drive, especially Scandisk or chkdsk. Each of the two have caused one of my problems, and then I searched the internet and found out I wasn't alone. I have used OnTrack's recovery program since then with good results, but I do not believe they sell it anymore. Again, just a word of caution. What package were you trying to install, and what OS as PhilC asked. This info could help.