http://www.codinghorror.com/blog/archives/000811.html
(http://www.microsoft.com/whdc/system/platform/server/PAE/PAEdrv.mspx) /PAE enables 36bits *in the CPU* for storing page tables. This does not *automatically* mean that your Windows OS will use 36bits for storing memory page tables. Windows XP SP2 (but not SP1) and Windows Server 2003 Standard Edition x86, have an artificial limit *built into the OS code* to stop memory addresses beyond 0xFFFFFFFF (2^32) from being used. /PAE is still *usable* on these symptoms (it enables 36bits for page tables). The NX (no execute) functionality that XP SP2 and Windows Server 2003 x86 SP1 support relies on the extra bits that /PAE enables to store the /NX flag. However the artificial memory address limit in these OSes means you can't use addresses above 0xFFFFFFFFF to address physical RAM. HTH Z Edward E. Ziots Network Engineer Lifespan Organization MCSE,MCSA,MCP,Security+,Network+,CCA Phone: 401-639-3505 -----Original Message----- From: Brumbaugh, Luke [mailto:[EMAIL PROTECTED] Sent: Friday, March 21, 2008 12:51 PM To: NT System Admin Issues Subject: RE: Making XP recognize 4Gb Ram And what was your answer? From: Webster [mailto:[EMAIL PROTECTED] Sent: Friday, March 21, 2008 12:47 PM To: NT System Admin Issues Subject: RE: Making XP recognize 4Gb Ram From: Brumbaugh, Luke [mailto:[EMAIL PROTECTED] Subject: Making XP recognize 4Gb Ram Does anyone have idea how to make XP recognize 4gb Ram? We just went thru this in great detail not too long ago. Webster ********************************************************************** CONFIDENTIALITY NOTICE: The information transmitted in this message is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and destroy all copies of this document. Thank you. Butler Animal Health Supply ********************************************************************** ~ Upgrade to Next Generation Antispam/Antivirus with Ninja! ~ ~ <http://www.sunbelt-software.com/SunbeltMessagingNinja.cfm> ~
