Hyperspace was envisioned as a way for these slow, low-power computers to instantly boot or switch between operating systems. [cathoderaydude] wanted to figure out what made this piece of software ...

The process is almost the same for Windows 11/10/8/7. First and foremost, you need a Windows installation DVD. Without that, it will be hard to proceed.

When the program is executed, it determines which partition contains the active operating system and branches to the boot program in that partition's boot sector to load it. See boot sector.

You need to rebuild the Boot Configuration Data file and repair the Master Boot Record file. To do this, you have to boot into the Advanced Startup Options screen and then select Command Prompt.

You want a Tetris that’ll fit inside the master boot record of a disk. You want Tetris as an operating system. You want TetrOS. Or maybe you don’t, but it’s a fantastic piece of work ...