A 'cold boot' varies from a 'warm boot' in that power to the memory chips is
lost on the cold boot. Calling the 'unmaskable interrupt', Int zero, puts
the pointer on the input data bus to the first byte of memory, and it reads
the 'bootstrap' of the BIOS chip. If devices and memory are warm, the boot
is faster, but it does not insure that memory is flushed, and there is a
small risk of 'data out of bounds' errors. Vista is even more guilty of not
flushing memory than previous systems, since nothing is ever intentionally
'blanked'. On the other hand, never turning off the processor is considered
good for the chip, much like an incandescent light bulb.
--
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Mark L. Ferguson MS-MVP
https://mvp.support.microsoft.com/profile/Mark.Ferguson
"Ken Isaacson" <KJIsaacson[nospam]@gmail.com> wrote in message
news:06CD756B-0AE9-4E04-812F-...
> Vista Ultimate, SP1
>
> What's the real difference between "restart" and "shut down" followed by
> turning back on? I know (I think) that some updates don't install unless
> you choose "shut down." Is that the only difference?
>
> Thanks.
>
> Ken Isaacson
> SILENT COUNSEL, a legal thriller
> www.KenIsaacson.com
>