Hibernate

NTDEV
1

In Windows 2000 Professional Edition, the “Power Options Properties”
does not show the “Hibernate Tab”. I have ACPI enabled system. The
ACPI seems to work fine on this system. Of course I am logged as
administrator. What could be wrong?

Thanks,
Niraj

2

How much memory do you have in the system? If you have a lot of
physical RAM (I don’t remember exactly where the cut off is, it might be
around 256K), the hibernate feature is disabled because it would take
much longer to write out the hibernate file than it would take to reload
the o/s.

It’s a guess…

Sandy Spinrad
Device Driver Evangelist
Microsoft Corporation

-----Original Message-----
From: Niraj Jaiswal [mailto:xxxxx@starcomtec.com]
Sent: Wednesday, September 06, 2000 2:41 PM
To: NT Developers Interest List
Subject: [ntdev] Hibernate

In Windows 2000 Professional Edition, the “Power Options Properties”
does not show the “Hibernate Tab”. I have ACPI enabled system. The
ACPI seems to work fine on this system. Of course I am logged as
administrator. What could be wrong?

Thanks,
Niraj

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3

I have 256 MB of physical RAM on my system. This is strange though.
This option should be with the user and not the OS. I wouldn’t mind
if the OS takes a bit longer to hibernate or to reload from hibernate.
Is there an option to bypass this feature? The other way round would
be to limit the physical RAM to a figure lower than the cut-off.

Thanks,
Niraj

Sandy Spinrad wrote:

How much memory do you have in the system? If you have a lot of
physical RAM (I don’t remember exactly where the cut off is, it might
be around 256K), the hibernate feature is disabled because it would
take much longer to write out the hibernate file than it would take to
reload the o/s.

It’s a guess…

Sandy Spinrad
Device Driver Evangelist
Microsoft Corporation

-----Original Message-----
From: Niraj Jaiswal [mailto:xxxxx@starcomtec.com]
Sent: Wednesday, September 06, 2000 2:41 PM
To: NT Developers Interest List
Subject: [ntdev] Hibernate

In Windows 2000 Professional Edition, the “Power Options Properties”
does not show the “Hibernate Tab”. I have ACPI enabled system. The
ACPI seems to work fine on this system. Of course I am logged as
administrator. What could be wrong?

Thanks,
Niraj

4

Speaking of Hibernate:

I’m writing a Scsi Port driver for win2000 and am having trouble getting
Hibernate to work consistently.

Running the System HCT ACPI tests, Hibernate fails about 1/2 the time. The
failure occurs while the system is in the “Restoring Windows” phase. It
gets about 1/4 the way along the progress bar then breaks to a “Delete
Restoration File” screen.

Does anyone know why this would happen? Is there any tool out there to look
at a Hibernate file to find out why it’s not valid?

thanks,

Daniel Nemiroff

-----Original Message-----
From: Niraj Jaiswal [mailto:xxxxx@starcomtec.com]
Sent: Wednesday, September 06, 2000 4:57 PM
To: NT Developers Interest List
Subject: [ntdev] RE: Hibernate

I have 256 MB of physical RAM on my system. This is strange though.
This option should be with the user and not the OS. I wouldn’t mind
if the OS takes a bit longer to hibernate or to reload from hibernate.
Is there an option to bypass this feature? The other way round would
be to limit the physical RAM to a figure lower than the cut-off.

Thanks,
Niraj

Sandy Spinrad wrote:

How much memory do you have in the system? If you have a lot of
physical RAM (I don’t remember exactly where the cut off is, it might
be around 256K), the hibernate feature is disabled because it would
take much longer to write out the hibernate file than it would take to
reload the o/s.

It’s a guess…

Sandy Spinrad
Device Driver Evangelist
Microsoft Corporation

-----Original Message-----
From: Niraj Jaiswal [mailto:xxxxx@starcomtec.com]
Sent: Wednesday, September 06, 2000 2:41 PM
To: NT Developers Interest List
Subject: [ntdev] Hibernate

In Windows 2000 Professional Edition, the “Power Options Properties”
does not show the “Hibernate Tab”. I have ACPI enabled system. The
ACPI seems to work fine on this system. Of course I am logged as
administrator. What could be wrong?

Thanks,
Niraj

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To unsubscribe send a blank email to $subst(‘Email.Unsub’)

5

I do have enough disk space and I haven’t installed any third-party
drivers. I even tried taking out physical RAM from my system to make
it less than 256 MB. Still it doesn’t work. Any ideas??

Thanks,
Niraj

Sergey Pushnyakov wrote:

Hello Niraj!

To enable hybernate feature you need free disk space on startup disk
equal to amount of your RAM (i.e. at least 256Mb). Sometimes “Hybernate”
feature becomes disabled after installing third-party device drivers
(e.g. video drivers).

Regards,
Sergey

-----Original Message-----
From: xxxxx@csie.nsys.by [mailto:xxxxx@csie.nsys.by]
Sent: Thursday, September 07, 2000 2:57 AM
To: NT Developers Interest List; xxxxx@csie.nsys.by
Subject: [ntdev] RE: Hibernate

I have 256 MB of physical RAM on my system. This is strange though.
This option should be with the user and not the OS. I wouldn’t mind
if the OS takes a bit longer to hibernate or to reload from hibernate.
Is there an option to bypass this feature? The other way round would
be to limit the physical RAM to a figure lower than the cut-off.

Thanks,
Niraj

> Sandy Spinrad wrote:
>
> How much memory do you have in the system? If you have a lot of
> physical RAM (I don’t remember exactly where the cut off is, it might
> be around 256K), the hibernate feature is disabled because it would
> take much longer to write out the hibernate file than it would take to
> reload the o/s.
>
> It’s a guess…
>
> Sandy Spinrad
> Device Driver Evangelist
> Microsoft Corporation
>
> -----Original Message-----
> From: Niraj Jaiswal [mailto:xxxxx@starcomtec.com]
> Sent: Wednesday, September 06, 2000 2:41 PM
> To: NT Developers Interest List
> Subject: [ntdev] Hibernate
>
> In Windows 2000 Professional Edition, the “Power Options Properties”
> does not show the “Hibernate Tab”. I have ACPI enabled system. The
> ACPI seems to work fine on this system. Of course I am logged as
> administrator. What could be wrong?
>
> Thanks,
> Niraj

6

Actually, I was wrong on this. I was led astray by a false rumor.
Windows 2000 does not disable hibernate with systems with 256K+ of RAM.

Typically, the causes for not seeing the hibernate tab are either:

* The BIOS doesn’t support hibernate, which is probably not the case
because you said you have a ACPI system, but then again the BIOS could
have a bug in it.
* You have a legacy NT 4 driver loaded that does not do power
management.

Are you able to put the system to sleep?

My apologies my earlier mistake.

–Sandy

-----Original Message-----
From: Sandy Spinrad
Sent: Wednesday, September 06, 2000 3:38 PM
To: ‘NT Developers Interest List’
Subject: RE: [ntdev] Hibernate

How much memory do you have in the system? If you have a lot of
physical RAM (I don’t remember exactly where the cut off is, it might be
around 256K), the hibernate feature is disabled because it would take
much longer to write out the hibernate file than it would take to reload
the o/s.

It’s a guess…

Sandy Spinrad
Device Driver Evangelist
Microsoft Corporation

-----Original Message-----
From: Niraj Jaiswal [mailto:xxxxx@starcomtec.com]
Sent: Wednesday, September 06, 2000 2:41 PM
To: NT Developers Interest List
Subject: [ntdev] Hibernate

In Windows 2000 Professional Edition, the “Power Options Properties”
does not show the “Hibernate Tab”. I have ACPI enabled system. The
ACPI seems to work fine on this system. Of course I am logged as
administrator. What could be wrong?

Thanks,
Niraj

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