On Mon, 3 Oct 2011, Al Kossow wrote:
That is exactly the conclusion in the paper I
uploaded.
If you look at the graphs, it is very difficult to accidentally erase
digital magnetic media.
Maybe I'm cynical, but it seems to me that it is hard to DELIBERATELY
erase digital magnetic media, but easy to do it accidentally.
That has been my experience as well. I have had
much more trouble with physical media failure than the magnetization
going away.
TRUE.
Look for small creases in the surface, etc.