Is there (was there ever?) serious programming being done in machine code?

[Senegoid]

4900796

Related thread from several years ago: If this thread interests you, then this older one will too:

Explain to Me Like I'm Five What Happens When You Install a New Operating System

I’m a fairly tech savvy person, and I’ve done a fair amount of hardware install in my desktops over the years: RAM, video cards, sound cards, a power supply, I replaced a broken DVD drive and later even added a second DVD drive with the help of a wonderfully informative youtube video. But I’ve never installed a hard drive *or *replaced an operating system, and I’d very much like to replace my current hard drive with an SSD drive, keeping the old hard drive as a secondary drive as my computer ca…