hibernation mode

  • Thread starter Thread starter Jason
  • Start date Start date
J

Jason

On a MS tutorial, I thought I saw them claim something about being able to
save the current working state if power is lost. Would this be hibernation
mode? If so, what module do I need to include for that functionality?

Thanks
 
Hi Jason. Hibernation Mode is the computer's ability to save the contents
of its RAM to a file on disk, power down (complete off), and then later boot
up again and resume where it left off by reloading the RAM contents from
disk. This greatly reduces boot times in this case.

However, Hibernation Mode can't account for sudden losses of power, as it
needs to take time to store everything to disk. If you have a UPS in the
system, some UPS devices come with software that you can use to
automatically hibernate or shutdown the system when a power loss is
detected.

If you're referring to an Embedded-specific feature, most likely what you
were reading about was "Hibernate Once, Resume Many" (HORM). This allows
you to setup the system in any way you want, then Hibernate the system, and
then have the system boot up to THAT image every time it boots afterwards.
In this way, your runtime is "saved" to a stable point that the system can
consistently power-up to, but that "boot-up point" will always be the same
as of the time the system was hibernated.

For more information on HORM, check out this article:
http://msdn.microsoft.com/library/d...ry/en-us/xpehelp/html/xeorihibernationewf.asp

--
Matt Kellner ([email protected])
STE, Windows Embedded Group

This posting is provided "AS IS" with no warranties, and confers no rights.
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