http://joi.ito.com/archives/2005/05/07/bsod_upgrad... 
sembrava un hoax per via di un mispelling, invece ecco la procedura per replicarlo:
heres what you need to do:
[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(2)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(2)\WINDOWS="Microsoft Windows Longhorn 5048" /NOEXECUTE=OPTIN /FASTDETECT /USENEWLOADER /DETECTHAL
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows Longhorn 4074" /FASTDETECT /DETECTHAL /USENEWLOADER
multi(0)disk(0)rdisk(0)partition(3)\WINDOWS="Microsoft Windows XP Professional" /FASTDETECT
ok, the USENEWLOADER tag: append it to any non-5048 OS (in my case, longhorn 4074) and reboot. it will then be added to the new boot menu. try booting off of that older OS through the new boot menu and Voila!