A small review of the BSS area. I hope you find the changes acceptable - the changes proposed here should improve the narrative flow, as well as provide a slightly clearer explanation as to what the x86 code is doing (for those less familiar with native x86 instructions).
There's a NASM compilation error:
```
boot.nasm:1: error: label or instruction expected at start of line
Note: this example written with Intel syntax:1: error: label or instruction expected at start of line
```
kittyhawk