Deleted files on Floppy & Hard disk -remnants ?

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Deleted files on Floppy & Hard disk -remnants ?
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1) When you delete a file from a Floppy disk
-what information is left about that file ??

I know that the data may remain for the file, unless it is wiped or
overwritten ?

What about the Fille name, does information on that still exist ??
-about when it was created on the Floppy disk ??
-when it was deleted ??

Is this the same for a Hard Disk ??

2) How do you delete all information about a particular file, when the file
it is deleted ??

3) Does Disk Copy of a Floppy Disk do an exact copy ??

-does it only copy Files that exist ??
-does it also copy deleted data ??
-is the copy an exact mirror image ??

4) What information goes onto a Floppy, when it first formatted ??
-is there any information about the computer ??
-is there any information about the operating system ??
-does it datestamp the floppy when it is formatted ??

Thanks