This affects the boot loader in stage 1 using
BIOS functions to read stage 2 and the kernel

Geometry Specification

(emulated) floppy gives us

0x0101, 0x4f12

which is 2 heads, 80 sectors, 18 sectors, sounds good

Asus, Eeepc 701, pendrive 16 gb:

0x0000, 0x0012

mmh?