How do OS installers works if there isn’t any OS that could manage applications in an empty computer?

Question

How do OS installers works if there isn’t any OS that could manage applications in an empty computer?

In: Technology

Answer 1

Back in the old days you used to have to boot into a hard drive formatting tool to format it otherwise Windows didn’t know it existed.

When 2Gb disks arrived you had to tell it there was data that could exist