Any problems with hibernation instead of powering off?

[tuningoutNOSPAM@yahoo.ca]

I've got a notebook running XP home, and I'm wondering if there's any
disadvantage to just using hibernation instead of turning the computer
off, even when I'm walking around with the notebook in my bag.

Thanks,
James

[Plato]

wrote:
>
> I've got a notebook running XP home, and I'm wondering if there's any
> disadvantage to just using hibernation instead of turning the computer
> off, even when I'm walking around with the notebook in my bag.

Battery usage?


--
http://www.bootdisk.com/

[Aristotle]

Erm... yeah. With hibernation, you save less power then shutting down would but still more power then standby. The advantage is that hibernation restores all processes and open files as soon as you turn it back up, while shutting down basically stops and c
loses everything. Standby is just like hibernation except it uses more power and the process and files start back up immediately instead of having to load a restore file.

[*Vanguard*]

" said in
:=2 0
> I've got a notebook running XP home, and I'm wondering if there's any
> disadvantage to just using hibernation instead of turning the computer
> off, even when I'm walking around with the notebook in my bag.
>=20
> Thanks,
> James

When returning out of hibernation, it's like waking up the screen saver. =
You only have to enter the password to get past the lockout screen. =
That's only half of your login. When you boot normal (i.e., NOT from =
hibernation mode), you get a login screen that has you enter both your =
username and password (provided you haven't short-circuited the login =
process by, say, using TweakUI to configure auto-login using an =
admin-level account). =20

To prevent the last user (i.e., you) from being already inserted into =
the Username field of the login screen, run gpedit.msc (group policy =
editor) and go to the following node:

Security Settings -> Local Policies -> Security Options

Then set the following policies as noted below:

"Do not display last user name" =3D Enabled
"Do not require Ctrl+Alt+Del" =3D Disabled

Under Windows XP, do NOT record a hint for the password (User Accounts =
applet in Control Panel). If it's a good hint to you, it might provide =
a good enough hint to a thief, or make it very esoteric and do not use =
the same number of words in the hint as there are in the password =
regardless of whether spacing is used in the password or hint.

Get rid of that Fisher-Price insecure Welcome Screen (for login). It =
lists the accounts. Don't be giving any info away to a thief. Revert =
to the classic login screen (User Accounts -> Change the way user log =
....). This will also disable Fast User Switching, but do you really =
need to leave processes left running for other users that use your =
laptop? =20

If the data is sensitive or you just don't want anyone else to see it, =
use EFS (encrypted file system) on those data files. Permissions are =
ONLY applied under the instance of Windows in which they were defined. =
So the thief can simply do a parallel install of Windows into a =
different directory or slide the hard drive into another computer (which =
is obviously running a different instance of Windows) and all those =
permissions go bye-bye (I'm not sure about Administrator, however, since =
it gets assigned the same standard SID [security identifier] in each =
install of Windows). If you use EFS, make damn sure you export your EFS =
security certificate onto a floppy or CD and then lock it up somewhere. =
You WILL need it should you have to do a fresh install of Windows or =
backup your files under a different instance of Windows. EFS is only =
available if you use NTFS as your file system.
--=20
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[tuningoutNOSPAM@yahoo.ca]

On Fri, 26 Mar 2004 18:36:06 -0800, Aristotle
> wrote:

>Erm... yeah. With hibernation, you save less power then shutting down would but still more power then standby. The advantage is that hibernation restores all processes and open files as soon as you turn it back up, while shutting down basically stops and
closes everything. Standby is just like hibernation except it uses more power and the process and files start back up immediately instead of having to load a restore file.


Ok. But in terms of moving the notebook around, bumping it, etc
(which you of course wouldn't want to do on or in standby), there's no
problem with screwing up the harddrive or anything, because it's
completely powered down, right?

[wojo]

Bumping etc.. doesn't affect HDD's like it used to that's why there aren't
utilities around anymore to "park" the heads as with the older computers.
But what you say is essentially true. The system is powered down while in
hibernation.

--

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If I can help you I will.
If you can help me thanks.

> wrote in message
...
> On Fri, 26 Mar 2004 18:36:06 -0800, Aristotle
> > wrote:
>
>>Erm... yeah. With hibernation, you save less power then shutting down
>>would but still more power then standby. The advantage is that hibernation
>>restores all processes and open files as soon as you turn it back up,
>>while shutting down basically stops and closes everything. Standby is just
>>like hibernation except it uses more power and the process and files start
>>back up immediately instead of having to load a restore file.
>
>
> Ok. But in terms of moving the notebook around, bumping it, etc
> (which you of course wouldn't want to do on or in standby), there's no
> problem with screwing up the harddrive or anything, because it's
> completely powered down, right?

[*Vanguard*]

"Aristotle" said in
:=20
> Erm... yeah. With hibernation, you save less power then shutting down
> would but still more power then standby. The advantage is that
> hibernation restores all processes and open files as soon as you turn
> it back up, while shutting down basically stops and closes
> everything. Standby is just like hibernation except it uses more
> power and the process and files start back up immediately instead of
> having to load a restore file. =20

Sorry folks but hibernation DOES power off the computer. It saves the =
contents of memory to an image file, performs a shutdown, and then power =
goes off. There is no difference in power consumption between you doing =
the shutdown and powering off and hibernation mode doing it =
automatically for you (except for the time to write the image file). =
You then do a cold boot and the image file gets read back into memory.

Standby reduces power by reducing duty cycle of the CPU, stopping hard =
drives, turning off the monitor, and such, but the computer remains =
powered up. You will still suck up amps from your PSU and/or batteries. =
Standby does NOT save a image file of the memory contents (because the =
memory is still powered). If the power is lost (i.e., batteries go =
dead), it's the same as your powering off while in the middle of a =
Windows session. Hopefully it'll come back up okay. Note that when in =
Standby mode that your network connection will be disabled (i.e., don't =
expect it to be doing anti-virus updates while in Standby mode).

Hibernation completely turns off the computer after saving an image of =
memory which it restores when power is turned back on. There is no more =
drain on your PSU or batteries than when you yourself do a shutdown and =
power off. Hibernation is the "deepest" power saving mode. The =
batteries can be removed. All power can be lost. But once power is =
restored, that image file is still on the hard disk to restore the =
system to the same state. Because power was removed, the boot from =
hibernation will still have to go through the POST which includes an =
initialization signal to all devices to put them into a known state. =
This can cause a problem with some devices: their state (within their =
own hardware) just before the system went into hibernation may not be =
the same as when they get initialized during bootup and the memory =
restored. That's a compliance deficiency in that hardware or driver for =
it.

Go read the following:

Description of the Different Advanced Power Management States=20
http://support.microsoft.com/?kbid=3D308535

Which says:

"Hibernation saves the complete state of the computer and turns off the
power."



--=20
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[Rick \Nutcase\ Rogers]

Hi,

None really. In hibernate, there is no power to the system, so there's no
battery drain as opposed to just shutting down. It's just that the contents
of ram have been saved to the hard drive (the hiberfil.sys file on the root
of the boot drive). When you startup, it's just like a normal boot, except
the hiberfil.sys file is picked up and the contents are copied back to ram.
Essentially, you pick up where you left off.

--
Best of Luck,

Rick Rogers aka "Nutcase" MS-MVP - Win9x
Windows isn't rocket science! That's my other hobby!
http://mvp.support.microsoft.com/
Associate Expert - WinXP - Expert Zone
www.microsoft.com/windowsxp/expertzone
Win98 Help - www.rickrogers.org

> wrote in message
...
> I've got a notebook running XP home, and I'm wondering if there's any
> disadvantage to just using hibernation instead of turning the computer
> off, even when I'm walking around with the notebook in my bag.
>
> Thanks,
> James

[Alex Nichol]

Aristotle wrote:

>Erm... yeah. With hibernation, you save less power then shutting down would but still more power then standby. The advantage is that hibernation restores all processes and open files as soon as you turn it back up, while shutting down basically stops and
closes everything.


Hibernation by XP does shut the machine down entirely and power it off.
When you turn on again the 'boot' passes the buck to 'unhiberante'.
This is convenient if you are going around, using the machine for short
periods in each place. All you need do is shut the case (which can
usually be made to initiate hibernation); and on opening it the
previous state - including open programs - is restored quickly.

--
Alex Nichol MS MVP (Windows Technologies)
Bournemouth, U.K. (remove the D8 bit)

[Plato]

wojo wrote:
>
> Bumping etc.. doesn't affect HDD's like it used to that's why there aren't
> utilities around anymore to "park" the heads as with the older computers.

In fact, one can toast a hard drive these days by using an old "parking"
utility. One appointment I went on the person ran an old parking util
and you could just hear the hard drive clicking away ie trying to park
in a space it didnt have.

[wojo]

--

TO Email: Remove [SPAM]

**Useful Links**
AdAware:
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Spybot S & D:
www.safer-networking.org/
Check for Parasites/Worms:
www.gemal.dk/browserspy/parasites.html
Blaster Security Patch:
http://www.microsoft.com/security/incident/blast.asp
TweakUI and other PowerToys:
www.microsoft.com/windowsxp/pro/downloads/powertoys.asp

If I can help you I will.
If you can help me thanks.

"Plato" <|@|.|> wrote in message
...
> wojo wrote:
>>
>> Bumping etc.. doesn't affect HDD's like it used to that's why there
>> aren't
>> utilities around anymore to "park" the heads as with the older computers.
>
> In fact, one can toast a hard drive these days by using an old "parking"
> utility. One appointment I went on the person ran an old parking util
> and you could just hear the hard drive clicking away ie trying to park
> in a space it didnt have.

Very true.

[Michael Walraven]

An example of hardware not getting restored properly is my Dell 4100. When
it resumes from hibernate the disc drives are in PIO
mode rather that the Ultra DMA mode they are supposed to be in. Sure wish
there was a fix for that.

Michael

"*Vanguard*" > wrote in message
...
"Aristotle" said in
:
> Erm... yeah. With hibernation, you save less power then shutting down
> would but still more power then standby. The advantage is that
> hibernation restores all processes and open files as soon as you turn
> it back up, while shutting down basically stops and closes
> everything. Standby is just like hibernation except it uses more
> power and the process and files start back up immediately instead of
> having to load a restore file.

Sorry folks but hibernation DOES power off the computer. It saves the
contents of memory to an image file, performs a shutdown, and then power
goes off. There is no difference in power consumption between you doing the
shutdown and powering off and hibernation mode doing it automatically for
you (except for the time to write the image file). You then do a cold boot
and the image file gets read back into memory.

Standby reduces power by reducing duty cycle of the CPU, stopping hard
drives, turning off the monitor, and such, but the computer remains powered
up. You will still suck up amps from your PSU and/or batteries. Standby
does NOT save a image file of the memory contents (because the memory is
still powered). If the power is lost (i.e., batteries go dead), it's the
same as your powering off while in the middle of a Windows session.
Hopefully it'll come back up okay. Note that when in Standby mode that your
network connection will be disabled (i.e., don't expect it to be doing
anti-virus updates while in Standby mode).

Hibernation completely turns off the computer after saving an image of
memory which it restores when power is turned back on. There is no more
drain on your PSU or batteries than when you yourself do a shutdown and
power off. Hibernation is the "deepest" power saving mode. The batteries
can be removed. All power can be lost. But once power is restored, that
image file is still on the hard disk to restore the system to the same
state. Because power was removed, the boot from hibernation will still have
to go through the POST which includes an initialization signal to all
devices to put them into a known state. This can cause a problem with some
devices: their state (within their own hardware) just before the system went
into hibernation may not be the same as when they get initialized during
bootup and the memory restored. That's a compliance deficiency in that
hardware or driver for it.

Go read the following:

Description of the Different Advanced Power Management States
http://support.microsoft.com/?kbid=308535

Which says:

"Hibernation saves the complete state of the computer and turns off the
power."



--
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