WINDOWS XP SERVICE PACK 4 UNOFFICIAL 3.1C INSTALL.WINDOWS XP SERVICE PACK 4 UNOFFICIAL 3.1C HOW TO.I'll list the methods referred in the link.Īll relevant download links are on the page mentioned before. suggests four different ways to access the registry without actually booting into Windows.Īll of the methods require some sort of bootable device. Now, for the accessing the registry without booting. Original - Doesn't have (or CSDVersion = 0).The values of CSDVersion will be 0x100 for Service Pack 1, 0x200 for Service Pack 2, and so forth. HKLM\system\CurrentControlSet\control\windows\CSDVersion Note that, if you need to verify the version of an NT4 Service Pack prior to Service Pack 4, you should also query the following registry key to determine the SP level, as in this sample. This post from MSDN, albeit cryptic, does give insight on the values CSDVersion accepts. The machine will now think that you’ve applied SP3 when you’re actually running Windows XP SP2. Navigate to the key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Windowsĭouble-click the DWORD value CSDVersion and change the value data from 200 to 300. Quoting from TechRepublic the relevant parts:
This is still useful in case something somewhere deletes the %SYSTEMROOT%\System32\ntdll.dll, rendering method useless. There are some uses to this, but I won't delve in this.Īs warns, accessing and changing the registry without proper precautions can damage the underlying installation. Regardless of whether you can or can not repair the underlying Windows installation, there exists a "hack" that allows to cheat Windows into thinking it is a SP3 when it is still SP2.
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