Tom, the recovery cd approach worked. First I made the cd by burning ( copying) the bootg.iso file, rebooted and selected F2 to edit the bios to specify boot order to read cd/DVD before hard-disk drive (HDD), rebooted, selected defrag option from the recovery cd, let it start for 30 seconds or so, then killed the power, removed cd and turned on power, and I am in windows with defrag working. Thus, I can now get work done while waiting for total disk defrag so that I can reinstall windows.