Vista Kernel Patch 4gb

Intel introduced the 36-bit physical addressing mode called PAE (Physical Address Extension, read or ) since Intel Pentium Pro processor to allow 32-bit operating systems to use more than 4 GB of physical memory. However, even with x86 or x86-x64 PAE supported CPU processor, in most Windows system, PAE is disabled by default, and user has to manually turn on the PAE support in operating system in order to recognize and use more than 4 GB of physical RAM memory, with the exception of Windows Vista. A lot of technical support and troubleshooting sites for Windows Vista publishes a tweak or tip that asking user to manually enable PAE support in 32-bit Windows Vista with the following command to use more than 4GB of memory. BCDEdit /set PAE forceenable According to, “on a computer that supports hardware-enabled Data Execution Prevention (DEP) and is running a 32-bit version of the Windows operating system that supports DEP, PAE is automatically enabled when DEP is enabled (, DEP is enabled by default in Windows Vista) and, on all 32-bit versions of the Windows operating system, except Windows Server 2003 with SP1, PAE is disabled when you disable DEP. To enable PAE when DEP is disabled, you must enable PAE explicitly, by using /set nx AlwaysOff and /set pae ForceEnable. Download Acronis Os Selector Manual. Cardware 7.0 Serial there. ” Thus, PAE mode is always enabled by default in Windows Vista as it’s required for hardware-based DEP / NX. And 32-bit client versions of Windows Vista (and also Windows XP) will never support more than a 4GB address spaces, even with PAE enabled, according to another.