Wow ! That's cool. I was not aware of Eraser 6.2..
Ran British HMG IS5 Baseline 1pass on an old 160GB Seagate and it completed fine taking about 30 minutes.
I really don't know much about low level formatting except it fills zeros as claimed by many providing the tool to do it. Do you know about any detailed documentation about how the zero fill makes a significant improvement ?