Windows XP build 2600.1027

Windows XP build 2600.1027 is the earliest known Service Pack 1 build of Windows XP. It is referenced in the file  within the Windows Server 2003 source code.
 * NTLOG INITIATED +DATE+05/04/2002  +TIME+13:13:52
 * NtLog date: Thu Aug 23 18:56:27 2001
 * Exe  date: Sat May 04 12:12:03 2002
 * Processor : Intel CPU, Pentium III (Coppermine core), stepping 3, 256K on-chip cache detected
 * CPUS     : 1
 * System   : Windows NT 5.1[2600], Retail, Hydra Client, Mouse, Service Pack 1, v.1027
 * Build Lab : 2600.xpsp1.020424-1943