The following files are core components of the Windows XP Professional operating system. If you install Windows XP Professional as an upgrade from Microsoft Windows 2000 or earlier, the files listed in Table A-1 are located in the Windows\System32 folder or in Winnt\System32.
File Name | Description |
---|---|
Ntoskrnl.exe | Executive and kernel. |
Ntkrnlpa.exe | Executive and kernel with support for Physical Address Extension (PAE), which allows addressing of more than 4 gigabytes (GB) of physical memory. |
Hal.dll | Hardware abstraction layer. |
Win32k.sys | Kernel-mode part of the Win32 subsystem. |
Ntdll.dll | Internal support functions and system service dispatch stubs to executive functions. |
Kernel32.dll Advapi32.dll User32.dll Gdi32.dll | Core Win32 subsystem DLLs. |