Re: The disks may go, but the blocks will remain
I would disagree on that. Blocks are a convenient way of arranging sections of data managably.
Thats why they are used in disks, tapes, Memory layouts, MMUs, Video displays and so on.
After all, (simplifying), a computer is basically a state machine which fetches data from memory, performs actions on it, then stores it back. These days it does it a lot faster, they can run multiple instructions at once, a lot of IO devices have their own computers inside, and they are immensely compact, but if you explained the basics of how a modern PC worked to someone designing a digital computer in the 1950's, they would recognise most of how it works.