There's probably some distribution of mass that would result in uniform gravity across the whole disk. I'm guessing there would need to be more mass near the edge to counteract the diagonal pull of the mass near the center on the area near the edge.
About 3-4TB, most of it on a RAID storage array. Though I'm making a lot of YouTube videos now and I don't want to delete any of the footage so it's growing quickly.
Aren't BIOS updates usually done by putting the update file on a flash drive and installing it from the BIOS? I've never heard of updating BIOS from Windows with an executable.
Can you hear your laptop's fan speed up when it's overheating? Linux on my old laptop couldn't control the fan speed so it was always overheating. When I figured out how to manually set it to maximum, it overheated much less.