First of all, these sites all offer sterile versions of old operating systems, and everyone's computers back then were a mess. (howtogeek.com)
With the example I'm going through today, I'm actually going to revert to a slightly older operating system. (crackberry.com)
As Microsoft discontinues support for older operating systems, forcing businesses to transition to more current software, «it can be more economical to work with a provider who can do that seamlessly.» (cmitfranchise.com)