Is it possible to retreive deleted informations from a computer after it has been de?

Question

Is it true that all informations entered into a computer system and saved but later deleted from the hard drive and the trash/ recycle bin still remains in the computer system. If it is true how do I retreive the information from the system and is it possible to completely delete any unwanted information from a computer system and the information could not be retreived at all again and how could this be attained. What is the easiest program one can use to learn how to operate computer and become proficient in word, excel, computer repair, and other tutorials.

Answer 1

Friend
1.to retrieve the deleted files u have to use a file recovery software some even retrieve the files from a formatted disk too
2. to completly delete the file and still want them to be un-recoverable u have to use a shredder software..

for a free download of the above softwares check out the freeware section below.. hope i answered
http://www.snapfiles.com/freeware/

Answer 2

You should have asked two questions - tutorials is completely different from deleted data.

Yes, the data remains on your computer even after you delete it. Tools like Undelete from Executive Software and PC File Inspector can OFTEN but NOT ALWAYS recover the data. What happens is the index of files the computer keeps removes the entry for the deleted file so that when the space is needed later, it can just be overwritten. Otherwise, deleting LARGE files would take a very long time. There are tools available that "shred" the files - basically they write over the file (which for large files, could take a very long time) with 0's or a random pattern so that data cannot be easily recovered.

To erase the whole drive, you would probably use a tool like Darik's Boot and Nuke (dban) which writes over the drive several times - because with a REALLY expensive data recovery service (or an NSA/FBI/CIA type of lab) it's potentially possible to read the magnet field differences in how the data was written and recover the data even after you've shredded it. This is why the US Government never throws away old hard drives of computers in top secret labs - even if the data can't be recovered with today's technology, there's always tomorrow's technology.

More reading:
http://dban.sourceforge.net/faq/

Answer 3

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Answer 4

Raguram answer is great. Check it out.