When Windows XP came out, I went down to the store and paid $99.99 for the Home edition.
I started to Upgrade Windows 98 Second Edition, When the Windows XP Loader gave me a list of all the software and hardware that I had to take off my computer system that I spent alot of money building over the years. I'm still using Windows 98 Second Edition. And I cannot take it back to the store because they think I'm a thief for opening the package, and will not give me my $99.99 back. Of course I'll never shop there again, it will be a cold day in Hell.
Now about Windows 2000 at work, I upgraded Windows 98 Not. Windows 2000 alows you to not replace but add another operating system to the same hard drive, I.E., Directory c:/Windows works for Windows 98 and Directory c:/WINNT works for Windows 2000, you just have to know that Win98 is the primary operating system, and things like scan disk and defrag do not have permission to run in Windows 2000, and it will tell you. So, at work I'm running two operating systems Win98 and Win2000 on the same hard drive without partitions.
What I noticed the most is that there are not enough peripheral hardware software device drivers written at this time for XP and 2000, so
I'm keeping Win98 until theIndustry caches up.
Note: when running two operating systems on the same hard drive with no partitions, you really have to keep up with what programs you want to run on each operating system.
P.S.
When will someone write a true 64 bit operating system for Intel's Pentium CPU, MicroSoft operating systems are only 32Bit so there is Double Buffering inside all the PC's which slows down the Intel Processor and all the computers.