If you wanted something equivalent to maybe MS-DOS, and working in asm, my guess would be that you are thinking of at least two years, and perhaps 40,000 lines of code.

Once you have got basic input and output from the keyboard and screen, if I were you I would think about implementing a memory manager in the not too distant future. You need some method of...

You won't spend long in the world of hobby operating systems before hearing the name Bochs repeatedly mentioned. For all I know it might also be used in the development of commercial operating...

The reason a new style of partition table is needed is simply that the MBR style of partition table won't be able to cope once hard disk capacities atart to exceed 2Tb, as they shortly will.

Mobile phones work on UHF frequencies. Satellites work on SHF or EHF frequencies. So it's a network of earth bound base stations you would need; not a satellite.

You had better find yourself some...

Well, a single driver obviously cannot be reading from and writing to a port at one and the same instant, so presumably you are going to need two drivers, reading or writing to two different ports,...