Windows NT 4.0 build 1300

Windows NT 4.0 build 1300.1 is a build of Windows NT 4.0, mentioned in the file  from the Windows NT 4.0 source code.

This routine returns a newly-allocated buffer containing the source path from which the system was installed, or "A:\" if that value cannot be determined. This value is retrieved from the following registry location:

\HKLM\Software\Microsoft\Windows\CurrentVersion\Setup

SourcePath : REG_SZ : "\\ntalpha1\1300fre.wks" // for example.