The most common issue is with drivers and other system functions. Most updating or replacing an operating system (not a server) just need to find out if their applications run okay in the new OS. For most, this is a handful of commercial applications, so is a short process. Those with specialized or custom code may suffer.
A large advantage of 64-bit is getting past the 4B address limit. Thank you, Mark Snyder - not drowning, waving -----Original Message----- I'm not flailing here. I just don't understand and I'm not afraid to ask apparently ignorant questions. Keep in mind that I'm an experienced computer user, not a tech., so I don't quite understand the whole kernel level aspects of the discussed feature set. I have a Vista 64 machine that runs Photoshop CS4 at 64 bit. It runs Photoshop 7 at 32 bit. It even runs older apps at 16 bit, I think. So even though the OS is 64 bit, and I realize that means I can run 64 bit apps., it doesn't limit my running whatever I want, right? And I don't have to reboot to a 32 bit environment to do it. Is the discussion revolving around a supposed engineering advantage of being able to boot to a 32 bit environment to run older apps.? Wouldn't it be better to boot at 64 bit and have the OS use 32 bit 'natively' when it needs to without having to restart? This appears to be what Vista 64 is doing. Feel free to point out my ignorance. I'm just trying to understand. And it may help to clarify the discussion for all. Mark ************************************************************************* ** List info, subscription management, list rules, archives, privacy ** ** policy, calmness, a member map, and more at http://www.cguys.org/ ** *************************************************************************
