WinXP support under BootCamp is more hardware dependent, rather than OS/software dependent.
I suspect it has to do with WinXP driver availability for newer hardware, firmware variations, etc.
Mac hardware up through some models that were introduced in the middle of 2010 can still boot 32-bit WinXP using the older BootCamp 4. If the hardware supports XP it will boot even if the OS on the Mac side is 10.7. And even up until 10.8.3 (after which BootCamp 5 was introduced which added Win8 support but subtracts any 32-bit Windows support).
On Jul 16, 2013, at 5:52 PM, Robert Cham <[log in to unmask]> wrote:
>> You can dual boot a Mac and Windows on Apple hardware. But the
>> current version of Apple's Boot Camp--which is free with MacOS--only
>> supports 64-bit versions of Win7 and Win8. Not anything earlier,
>> definitely not WinXP.
> I haven't used it lately, but I run XP under Boot Camp. Maybe
> because I'm using OS 10.6.8.