Do I need PAE mode on a 64bit OS?

lenix

Member

​

Joined

Jun 21, 2005

• Jun 8, 2009

• #1

Hello,

Today I tried to disable hibernating on XP64 and I got this message:

The following items are preventing hibernation on this system.
The system is running in PAE mode, and hibernation is not allowed in PAE
mode.

Click to expand...

I read about PAE mode and if I understand correctly it's a way to let 32bit OS recognize more than 4GB of ram.

So do I need this 'mode' on my xp 64bit ?

Thanks

 

Jon

Just Another Retired Moderator

​

Joined

Dec 19, 2000

Location

Lawrenceville, GA

• Jun 8, 2009

• #2

No. It's not even supported on 64-bit.

 

OP

lenix

Member

​

Joined

Jun 21, 2005

• Jun 8, 2009

• Thread Starter
• #3

So why am I running PAE mode on a clean installation? Should I disable it?

 

Jon

Just Another Retired Moderator

​

Joined

Dec 19, 2000

Location

Lawrenceville, GA

• Jun 8, 2009

• #4

My guess is that it is because DEP is enabled by default on x64 systems and the PAE is enabled as a carryover from 32-bit (PAE has to be enabled on 32-bit with hardware-based DEP).

In short, it's a bug.

 

OP

lenix

Member

​

Joined

Jun 21, 2005

• Jun 8, 2009

• Thread Starter
• #5

Alright, I tried to disable it ( /noexecute=AlwaysOff ) but 'powercfg /h off' still gives the same message in my first post.

Anyways I guess there is no hibernation on xp 64bit?

Anyways thanks for the info Jon

 

Jon

Just Another Retired Moderator

​

Joined

Dec 19, 2000

Location

Lawrenceville, GA

• Jun 8, 2009

• #6

Try /noexecute=optin /fastdetect /nopae instead.

Edit:

Nevermind. Read this. I've never used hibernation, but this is stupid.

 

OP

lenix

Member

​

Joined

Jun 21, 2005

• Jun 8, 2009

• Thread Starter
• #7

Read the article and yes it's stupid.
I'm gonna leave it as it is, don't really need hibernation.. I hope running in PAE mode won't hit my performance though.

 

Jon

Just Another Retired Moderator

​

Joined

Dec 19, 2000

Location

Lawrenceville, GA

• Jun 8, 2009

• #8

I won't, it's not supported (will ignore the setting).

 

Captain Newbie

Senior Django-loving Member

​

Joined

Jan 2, 2004

Location

Right seat with a bored "don't kill me" expression

• Jun 8, 2009

• #9

Wow, that article is ****ing retarded, and finally explains why I can't put my big x64 Vista box to hibernation (never cared enough to find out).

Clearly, my tremendous 500GB disks can't handle having 8GB or so written out to them...

 

Mpegger

Member

​

Joined

Nov 28, 2001

• Jun 9, 2009

• #10

Surely the drives can handle 8GiB being written to it, but the way Mickey$oft codes stuff, you'll hit the hibernate button and come back hours later just in time to see the computer finally turn off after having written 8Gib^10 worth of (useless and unnecessary) data.