From the last blog entry and the comments there:
It is a multiboot configuration which is fairly easy to do with Win98SE and a boot loader, I use(ed) a boot loader that is able to boot up to 100 partitions, each with their own separate (Any) operating system, of course, but of course, also only one partition and its operating system can be booted at any one time.
Let us say that you have 10 partitions and each of them has an operating system in it, you keep one of them unused just for emergencies as a nice and clean fresh master partition, it has an operating system same as the others and also all needed drivers and needed programs installed in it, same as with all the other partitions, but this partition is not to be used, except when it needs to be copied or cloned into some other partition, it was the partition that was installed in to the hard drive in the regular way and it was the first of the partitions that had an operating system in it.
Using a program, that Windows installation with all its drivers and all other any kind of programs installed in it is fully copied (Only the data in that partition is copied) into all other partitions in the hard drive, one partition at a time until all the partitions that you want to be able to boot and operating system from like Win98SE or WinXP have been copied to from the master partition into each of them one at a time.
If you want to, you can leave one or more partitions empty without an operating system in them so you can use them as download partitions where you can download your program to and keep them there for safe keeping.
Once all of that is done you boot into the first and regular active partition and then install the partition operating system boot loader from it (There) and then restart your PC and a boot many will appear where or from where you will chose or pick which partition you want to boot from of all those that are available in your hard drive and or hard drives if you have more than one of them.
Of course, each partition (That has a bootable operating system in it) even those in the same hard drive will show as if it (They were) was a separate hard drive.
Once you pick a partition the Pc will boot into it.
You could have videos on one partition, music on another, pictures on some other, lottery program or systems on another, games on some other, business programs on another, painting programs on some other and or what ever you want to have in each of them and when you start and or restart your Pc you will pick or chose to which partition you want to go to and use the programs that are in that particular partition.
The storage or download partition(s) are best put down last at the very end of all the partitions, so it or they can be seen and used by all the other partitions and their operating systems.
The same operating system can be put in all or some of the partitions or different operating systems can be put into each of the different or individual partitions, they can be mixed in anyway that a person wants to.