Here's an old article on it: https://web.archive.org/web/20080420193929/https://www.theregister.co.uk/2002/02/20/be_inc_sues_microsoft/ https://web.archive.org/

Here's an old article on it: https://web.archive.org/web/20080420193929/https://www.theregister.co.uk/2002/02/20/be_inc_sues_microsoft/ https://web.archive.org/web/20080420193929/https://www.there... And another old document on it: https://www.jumpjet.info/Application-Software/BeOS/msft_complaint.pdf https://www.jumpjet.info/Application-Software/BeOS/msft_comp... In essence, Microsoft used its market position to pressure PC makers to not sell PCs which allow dual booting into a second preinstalled OS. Back then, it seemed that Be Inc finally got a breakthrough in the market, with Hitachi interested in shipping it preinstalled next to Windows, with a boot manager to select which one you want on every start. This might have finally gotten BeOS the wider exposure to users which it needed to become disruptive (most people will not install an aftermarket OS, they will just use whatever comes with the computer).