A computer wiz at work told me about using Debug to execute the HD controller firmware in ROM at address 8C something something. I discovered the interleave was 1:1 and the computer was taking like 4 or 5 revolutions of the disk to read a sector. Changed it to 2:1 and then it only took 2 revolutions to read a sector, greatly improving HD performance.
We've come a long way since then.
That got me interested, but I haven't verified it.
I let it upgrade to Windows 10 to see how that looked.
So Linux it is. Using Mint Cinnamon and don't care what happens in the MS world anymore.
Their so-called "security" updates caused so many problems, I jumped to Linux. W10? Fuggedaboudit.
In its original incarnation, its memory footprint was about 35 megabytes and it was insanely fast compared to anything that came after.
Where there's a will, there's a relative.