I was working on an Excel spreadsheet when to my horror I had accidentally pasted new data OVER some existing data. I did the usual CTRL-Z to undo, but unfortunately I had worked on the spreadsheet too much already that the undo levels did not reach all the way back to before the destructive paste. I quickly looked for a backup copy in my backup, but without going to details, I couldn't retrieve the file from backup.
I then recalled something I've noticed in the past when I was looking at the Properties screen for a file. In Windows Vista there is a tab called "Previous Versions". And when I did it for this Excel file I was able to find a version that was saved 3 months ago and retrieve it. Amazing!
I did some research on this Windows Vista feature and apparently you must have "System Protection" turned on, which by default should be already be on. Windows will then make "shadow copies"/previous versions of your files that could be restored.
I may not be all that impressed overall with Windows Vista, but this is just an awesome feature that I had to share with everyone. It really saved my day.
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