It seems that quarantine generously allows time for experimentation. Like this computer engineer who ran MS-DOS from a vinyl record.
If you are old enough you will surely remember with nostalgia the days when you were uploading programs to Spectrum through a tape recorder. Audio from the beginning of computers was a medium of data transmission.
Slovak engineer Jozef Bogin in quarantine probably ended it. So what he did was start MS-DOS, but instead of using a traditional cassette, he decided to try a vinyl record.
In the video below you will see in detail all the steps, but we should warn you that it is recommended to turn down the volume of your speakers, as the sounds that are heard are piercing. Users of 80's machines certainly know.
As you can see, MS-DOS does not boot on a modern computer, but on a prototype IBM 5150. The audio loading process is really surprisingly fast as MS-DOS 6.22 is rather small in volume.
According to Bogin's website the computer has a small ROM boot loader that handles the computer's built-in "cassette interface" and is invoked by the BIOS if all other boot options fail, e.g. floppy and hard disc.
The turntable turns and reads an analog record of a small 64K RAM drive. Contains a FreeDOS kernel, modified by Bogin to reduce volume, a small variant of COMMAND.COM, and an update to INTERLNK, which allows you to transfer files over a printer cable, modified so that it can run on FreeDOS. The bootloader reads the image of the disc from the audio recording via the cassette modem, loads it into memory and starts the system on it.
Although all this may sound like science rockets to some, it's actually an experiment that could keep you busy amid quarantine. Of course, there is no benefit, except perhaps for the fun of playing with the software and the satisfaction that you got it done.
If you want to try also at home you, Bogin gives through his website all the instructions. Good luck!!
