Basically, I used Disk Cleanup utility on a windows 7 Ultimate machine to delete the Windows.old folder only to discover that it contained a critical amount of data in the 'users/JonDoe/' which was referenced to from the upgrade by a simple shortcut on the desktop. How can I recover the windows.old folder in windows 7 ultimate after it has been deleted? I know that there are thousands of 'un-delete' programs out there, but which one is free, no limitations in trial and highly recommended? Does Microsoft have a utility to undo? Ive looked but can't seem to find anything, please help.
You can try using Pirisoft Recuva, which is free. Be aware that to have a chance at recovering the files you should avoid writing to disk or using other programs, as the files that they create might overwrite the data that you deleted. You should also put Recuva on a USB drive (from another computer).