Why do hard disks/CD’s have to spin fast

Question

Can we write the data as a single track, that way they could spin very slowly, like a vinly record.

Thanks.

In: 1

Answer 1

First of all, the speed of spinning equal to the speed of reading data. Slow spinning – less data per millisecond.

As to the single track – what happens when you delete a 1MB file from that track, but need to write a 2MB file instead? There is not enough space in that part of the track where the 1MB file used to be.