5.1.2285.1.beta1.001009-1544
| Major version | 5 |
| Minor version | 1 |
| Build number | 2285 |
| Build revision | 1 |
| Lab string | beta1 |
| Build time | 2000-10-09 15:44:00 |
| Family | Windows XP |
| Source type | Private leak |
| Source details | A screenshot of this build for Itanium 64, running in the Intel SDV emulator was <a href="http://www.betaarchive.com/forum/viewtopic.php?p=19324#p19324" title="Whistler build 2285 screenshot">posted online</a>. |