The title says most of it, but here it is
I have a z420 workstation with a boot block date of 12/28/2011, I believe that is the v1 model.
I’m trying to install a beta of Windows XP and it won’t let me set it back to the required date by the beta, which is 11/8/2000.
Any way I can get it older than 2005
System BIOS: J61 v02.11