PAE

NTDEV
1

Hello,
Is there a way to find out if the OS is running PAE enabled or not?

Thanks,
Mukul

2

Read Cr4

----- Original Message -----
From: “Mukul Kotwani”
To: “NT Developers Interest List”
Sent: Tuesday, April 09, 2002 5:25 AM
Subject: [ntdev] PAE

Hello,
Is there a way to find out if the OS is running PAE enabled or not?

Thanks,
Mukul

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You are currently subscribed to ntdev as: xxxxx@rdsor.ro
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3

Hi,

From Intel Manual :

PAE Physical Address Extension (bit 5 of CR4). Enables paging mechanism to
reference

36-bit physical addresses when set; restricts physical addresses to 32 bits
when clear.

Regards,
Satish K.S

----- Original Message -----
From: “Mukul Kotwani”
To: “NT Developers Interest List”
Sent: Tuesday, April 09, 2002 7:55 AM
Subject: [ntdev] PAE

Hello,
Is there a way to find out if the OS is running PAE enabled or not?

Thanks,
Mukul

—
You are currently subscribed to ntdev as: xxxxx@aalayance.com
To unsubscribe send a blank email to %%email.unsub%%

4

Look at _KUSER_SHARED_DATA and PF_PAE_ENABLED in ntddk.h
SharedUserData->ProcessorFeatures[PF_PAE_ENABLED] is a boolean.

=====================
Mark Roddy
Windows XP/2000/NT Consultant, Microsoft MVP
Hollis Technology Solutions 603-321-1032
www.hollistech.com
xxxxx@hollistech.com
For Windows Device Driver Training: see www.azius.com

-----Original Message-----
From: xxxxx@lists.osr.com
[mailto:xxxxx@lists.osr.com] On Behalf Of int3
Sent: Tuesday, April 09, 2002 1:28 AM
To: NT Developers Interest List
Subject: [ntdev] Re: PAE

Hi,

From Intel Manual :

PAE Physical Address Extension (bit 5 of CR4). Enables paging
mechanism to reference

36-bit physical addresses when set; restricts physical
addresses to 32 bits when clear.

Regards,
Satish K.S

----- Original Message -----
From: “Mukul Kotwani”
> To: “NT Developers Interest List”
> Sent: Tuesday, April 09, 2002 7:55 AM
> Subject: [ntdev] PAE
>
>
> Hello,
> Is there a way to find out if the OS is running PAE enabled or not?
>
> Thanks,
> Mukul
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@aalayance.com To unsubscribe send a blank email to
> %%email.unsub%%
>
>
> —
> You are currently subscribed to ntdev as:
> xxxxx@hollistech.com To unsubscribe send a blank email to
> %%email.unsub%%
>
>
>