Hi Himerion.

For your first question, installation in detailed in the Docs.
Actually HDD install is ... well ... experimental.
To say quickly, you require to install it on your first partition of your fisrt HDD, and have this partition FAT32.
You can found more info on HDD install in this board.

For your last question, softwares are mainly developed by people not in MeOS' team, and if some do post messages on what they're doing, some do not. Check out completely the boards (and FASM boards also !) for extra info ...