A. If when you try and install a service pack you receive one of the following errors:

Service Pack Setup could not find the Setup.log file in your repair directory


Service Pack Setup cannot open or modify your SETUP.LOG file

The problem is either

  • SETUP.LOG in the %systemroot%\repair directory is missing or damaged
  • The folder in which Windows NT was installed has been renamed (although this is unsupported by Microsoft)

If the file SETUP.LOG in the %systemroot%\repair is missing then you can copy it off your Emergency repair disk however if this is not an option you could copy from another machine but you may need to update the first few number of lines in the file (I copied a setup.log file from a NT Server Terminal Server installation to an NT Workstation and installed Service Pack 5 with no problems after changing the device and directory! This is not a supported method though).

Below is an example of the first lines of setup.log

... etc.

If you copy from another machine you may need to update the TargetDirectory and also the TargetDevice (which is where the %systemroot% is located and can be compared against the boot.ini file) and SystemPartition (which is the active partition, starting from 1, e.g. C:, this should not need to be changed).

If the TargetDirectory is different you should perform a global replace in the file from the old name, e.g. WINTSRV to the new name, e.g. WINNT.

If you do have a setup.log file in the repair directory and still get problems installing check that its format matches that given above.

If you don't have any SETUP.LOG files I have an example one you can download and modify from an NT Workstation installation (but don't mail me asking for support) but the correct procedure is outlined at http://support.microsoft.com/support/kb/articles/Q173/3/84.asp which involves reinstalling NT over your existing installation.