When you delete files from your hard drive or format the disk, do those files get deleted?
Well..
Actually computers cannot delete files from their memory. All it can do is over write.
When you delete a file, it goes to the recycle bin right? When you delete the file from the recycle bin it just vanishes right?
No.
The data you deleted are still in the memory. Only the pointer which points to that data has been erased by the operating system.
Simple example is: You don't kill prabhakaran. But you erase all the roads / paths he could come out. So he can't come out and no one can ever find him. So he is useless.
That's how the computer memory works. It just deletes the pointer in the index table which points to that particular data. So even though the data is still there, no one can find it.
And eventually when you store more data, that old data will get over written.
Even you format the hard drive, this is the case.
That's how many recovery tools work. They search for the deleted data and creates the pointer back so that the user can access the data again.
Interested? Read more
Well..
Actually computers cannot delete files from their memory. All it can do is over write.
When you delete a file, it goes to the recycle bin right? When you delete the file from the recycle bin it just vanishes right?
No.
The data you deleted are still in the memory. Only the pointer which points to that data has been erased by the operating system.
Simple example is: You don't kill prabhakaran. But you erase all the roads / paths he could come out. So he can't come out and no one can ever find him. So he is useless.
That's how the computer memory works. It just deletes the pointer in the index table which points to that particular data. So even though the data is still there, no one can find it.
And eventually when you store more data, that old data will get over written.
Even you format the hard drive, this is the case.
That's how many recovery tools work. They search for the deleted data and creates the pointer back so that the user can access the data again.
Interested? Read more
thanks for da info
