Win your Ultimate Tech Bundle by entering Fasthosts’ Techie Test here: https://www.fasthosts.co.uk/nostalgianerd (competition is now closed).... There was once a piece of code, buried deep within Windows, designed to detect competitor operating systems, and upon finding them, CRASH... or at least, make the user feel like something was seriously wrong. This was Microsoft's attempt to truly kill Digital Research's DR-DOS, and although it worked, it wasn't long until the true nature of Microsoft's practices was uncovered. 🔗Video Links🔗 Geoff Chappel's site: https://www.geoffchappell.com/notes/windows/archive/aard/index.htm For more references please see below. 🏆 Support 🏆 Support my channel, get exclusive videos & perks, as well as an ad and sponsor free experience at https://www.patreon.com/nostalgianerd from just $1 🏪 NN Shop & Affiliate Links! 🏪 My eBay Shop: https://nnerd.es/NerdShop (Now Re-open!) My Retro Tech book: http://nnerd.me/HVFtSB (2nd edition is out!) Desk Shelves for Retro Computers: http://nnerd.me/RetroShelves (Because you're worth it) 🍻 Share/Like 🍻 If you wish to share this video in forums, social media, on your website, or ANYWHERE else, please do so! It helps tremendously with the channel! Also, giving a thumb up or down also helps with visibility on Youtube. Many thanks! 📟 Subcribe 📟 Click to Subscribe: https://nnerd.es/2K4TYvX 📱 Join me on Social Media 📱 🐥 http://www.twitter.com/nostalnerd 🎮 http://www.twitch.tv/nostalgianerd 👱🏼📘 http://www.facebook.com/nostalnerd 📸 http://www.instagram.com/nostalgianerd 🌍 http://www.nostalgianerd.com/ 🎥 Equipment 🎥 Lumix G6 with Vario 14-42mm Lens Nikon D3200 with 40mm Macro Corel Video Studio Ultimate 2019 Corel Paint Shop Pro 2019 Blue Snowball Microphone 📜 Resources 📜 Full plaintiff document: https://web.archive.org/web/20110714052133/http://www.maxframe.com/DR/Info/fullstory/tech.html Andrew Shulman Details: http://www.ddj.com/articles/1993/9309/9309d/9309d.htm Geoff Chappel: https://www.geoffchappell.com/notes/windows/archive/aard/index.htm News story #1: https://web.archive.org/web/20080420194217/http://eatthestate.org/03-07/MicrosoftPlaysHardball.htm BBC Caldera Report: http://news.bbc.co.uk/1/hi/business/600488.stm May News Report: https://web.archive.org/web/20170624231328/https://www.v3.co.uk/v3-uk/news/1996865/cebit-caldera-windows-dr-dos-denying-ms-claims DR-DOS Profit Details, etc: https://web.archive.org/web/20080420194217/http://eatthestate.org/03-07/MicrosoftPlaysHardball.htm In video links and references are provided where possible. If you believe I have forgotten to attribute anything, please let me know (drop me an email via. the about page on Youtube or send me a tweet), so I can add it here. Apologies if I have missed anything out, it takes time to make these videos and therefore it can be easy to forget things or make a mistake. Errors and omissions excepted. Some material in this video may be used under Fair Dealing / Fair Use. Where under section 107 of the Copyright Act of 1976 (UK: Sections 29 and 30 of the Copyright, Designs and Patents Act 1988), allowance is made for purposes including parody, quotation, criticism, comment, news reporting, teaching, education and research. Fair Dealing / Fair use is a use permitted by copyright statute that might otherwise be infringing.