2nd Win98 OS in the 2nd drive?

[Uranium-235]

1) I've never actually done this, but I believe it would work.

2) I don't think they would mess with eachother. It might be safer to disable C in your bios when installing it on D, so it won't mess with it's master boot record.

3) yeah. the win95 is on the master boot record of a second drive, even if I try to install win98 on the main drive, it will still protest the installation. I just disable the second drive in my bios and it installs fine.

4). Not sure about linux. but with 98 yeah.