If you are in a situation where you wished you had a backup but you do not then this section maybe helpful.
Please keep in mind that the use of any recovery techniques or tools listed below may hinder or prevent a professional data recovery service from recovering your data. If you have important data that you must recover, then take it to a professional data recovery service with a clean room.
If you are not worried about the success of this recovery then the following links may be of use :
Should you know of any good articles or tools on data recovery then please let us know.