Windows Vista Service Pack Stages

Hi Everyone did anyone manage to find background information about processes
running during every stage of the vista servicepack installation? I mean Win
200,XP,2003 was able to do everything on one restart, why is necessary to
have 3 stages in Win Vista and Serv 2008
--
Viktor Kvapil
IT servers system group

IMHO Vista and later OSs have used multiple restarts in order to provide
better protection against interruptions such as power failures during the
installation/upgrade so that they could recover easily from such problems.
I was pleased to see them provide this additional protection.

"Viktor Kvapil" <viktor,kvapil@sk,hvb-cee,com> wrote in message
news:B130DA9E-0F8D-4D64-B076-...
> Hi Everyone did anyone manage to find background information about
> processes
> running during every stage of the vista servicepack installation? I mean
> Win
> 200,XP,2003 was able to do everything on one restart, why is necessary to
> have 3 stages in Win Vista and Serv 2008
> --
> Viktor Kvapil
> IT servers system group