Hi
I am a virtual dr student, i use this forum for getting help, today i want to know about Data recovery? let me simplify my question!!!

When we formate Hard disk, for example OS got corrupted, files missing, lets say we failed to fix it and format is the ultimate solution, Now if we put xp CD and boot it, the dard blue screen appears etc, and finally it says what you want to do with yr drive, for example it shown C drive already got windows, and i choose delete partation, then i recreate it and then i hit formate as NTFS for the installation of windows xp.... but here my D, E F.G H drives remains there, lets say they have got my data i.e Movies, pics.. documents, softwares etc etc

Now going back to that format place, what if i delete all my partations along with C, I.E D,E,F,G,H etc.. now it will show me collective space of my entire Harddisk like 500GB lets say...

Now i make again drives etc etc and finally install my windows on C drive as i mentioned earlier..

Now after all install i see my C drive for windows while D,E,F,G,H as empty as i deleted partations and then formated them...

People say its possible to recover data, that is deleted but at the same time they say not over written? I am confuse at this statement??? If One partition was of 40GB lets say it was D drive, i deleted it and recreated the partation with the similar sizes as it was previous now if i write 5GB data on this D drive then will it recover what it previous had on it before i deleted and recreated the partition( but here size as similar as it previous was, if it was 40 GB then it remains 40 GB after i deleted partation and recreated it)
So what does this over written means here??? Does it mean that 5GB space or equivalent data is over written so its impossible to recover while the rest of 44 or 4GB is recoverable??????????

Kindly educate me where data recovery is possible and in which formate or delete its impossible as people first say if you do this its impossible to recover but on the next forum they say its possible using this and that???

I want to know what i asked with straight answer!!!

Thankx

Jalal