A dive into the world of MS-DOS viruses

But sometimes life using DOS was not so great, sometimes you would be using DOS and all of a sudden things like this would happen. This sample also plays a small tune on the PC speaker while it’s printing, so this could be really embarrassing in a office environment. Those bootsector viruses were incredibly resilient – your computer would be just fine, until you put in an older floppy that apparently still had a virus on it. Good times.