How to hibernate in Vista ?

I only see the option for "sleep" ..?

What consumes less, sleep or hibernation ?

 

create a shortcut to "C:\Windows\System32\rundll32.exe PowrProf.dll,SetSuspendState"

2nd question, here, here, here, here, here, and I could go on forever...

 

I opened C:\Windows\System32\rundll32.exe but nothing happens ..

 

open ur command prompt and type powercfg /hibernate on

 

In the command prompt type:

powercfg –h on

 

I think you have to go to Start | All Programs | Accessories then right click on "Command Prompt" and select "Run as Administrator" and then type the command for this to work.

Gary

 

As an administrator, you can type the above command just in the start menu search box and click enter. There is no need to open cmd prompt.

 

Now that is a cool trick! Didn't realize that was possible.

Gary

 

Yeah, this comes in handy for sure.

 

Not sure if it works in Vista but in XP hitting the shift key turns stand by to hiibernate.

 

Only if hibernation is already enabled though.

Gary

 

I'm confused, by default, you can't click the right arrow and choose "hibernate"? I know I could in Vista and 7. Odd. Cool trick to know though!

 

Sometimes it is disabled by default in BIOS.

 

If you had used disk clean up to delete hiberfile.sys or disabled hibernation from the cmd prompt, this option won't be available from the start menu.

 

You can, IF hibernation has not been disabled. The disk cleanup tool will offer to delete the hibernation file and if it does then hibernation is disabled. When that happens you need to do the "powercfg -h on" trick. (There are actually OTHER ways to disable it as well.)

Gary

P.S. I just read Rajesh's reply and, as ususal, we are pretty much on the same page. ...big ol' grin...

 

Gary,


I did it like you said , the other option didn't work...

 

People confusing themselves all in the name of more free space that they won't need.

 

Ah, completely overlooked/forgot that! I haven't used disk cleanup in ages so yeah.

 

Gosh, that hibernation file takes 3 Gig on my SSD...is this normal ?

 

Yes, because it has to be sized for the amount of memory your system has-when you hit "hibernate" from the start menu, it saves everything running in memory to that hibernation file.

 

Well it USED to copy everything. I am beginning to question if that is still the case or not. Here's why.

1. After I installed Win7 the time it takes to hibernate and wake from hibernation has gone down dramatically. I didn't change the size of memory or put in a faster drive. So why did this happen? I also notice quite a bit of disk IO that occurs AFTER I wake it from hibernation. I/O that it didn't used to do. (I am speculating that MAYBE the OS is only writing specific portions of memory to the HiberFil.SYS. Only the services and DLL's that the OS itself needs and any for whatever apps are loaded. Then all the rest is just marked as needing to be refreshed after the machine wakes up. Again this is ONLY MY SPECULATION, I have ZERO, NADA, ZILCH to back it up. It's only a theory. But it is plausible. Think about it. The OS is using ReadyBoost to prefetch the stuff we MIGHT need soon. But none of that prefetch stuff needs to be written to the hiberfil.sys. That could be fetched again after wakeup. (I suspect this might be what I am observing.)

2. If you type powercfg -? at a command prompt you get a list of all of the parameters the ones for hibernate are illuminating:

Code:

  -HIBERNATE, -H
              Enables-Disables the hibernate feature.  Hibernate timeout is not
              supported on all systems.

              Usage: POWERCFG -H <ON|OFF>
                     POWERCFG -H -Size <PercentSize>
              -Size  Specifies the desired hiberfile size in percentage of the
                     total memory. The default size cannot be smaller than 50.
                     This switch will also enable the hiberfile automatically.

Why is that SIZE parameter there? I also remember some discussion early in the Win7 development that compression might be used by the OS when creating the hibernation file. Anyone know if that was implemented or not? It could also account for the speedup, but not the subsequent I/O after wake up.

Gary

 

Only what is in RAM memory is saved ?

 

What else is there to save???

Gary

 

:facepalm:

Maybe the programs you are running and stuff.

Oh wait.....

:laugh: