On 04/14/2014 05:50 PM, John Levine wrote:
In article <534c68f4....@cox.net> you write:
On 4/14/2014 9:38 AM, Matthew Black wrote:
Shouldn't a decent OS scrub RAM and disk sectors before allocating
them to processes, unless that process enters processor privileged
mode and sets a call flag? I recall digging through disk sectors on
RSTS/E to look for passwords and other interesting stuff over 30
years ago.
I have been out of the loop for quite a while but my strongly held
belief is that such scrubbing would be an enormous (and intolerable)
overhead ...
It must be quite a while. Unix systems have routinely cleared the RAM
and disk allocated to programs since the earliest days.
When you say "clear the disk allocated to programs" what do you mean
exactly?
