Hello I want to move forward to the young days of PCDOS 3.0 and use the old computers for my basic computer needs. Can the senior members guide me?
Are you talking about a home brew PC?
If you want to head down this road without building something from scratch and want to learn a lot about how your processor actually functions, consider trying to build a boot sector. Following that, building a very basic version of a DOS is a fantastic learning experience. If you decide to give it a shot, please feel free to ping me. I've been down this road professionally a number of times.