It will not format any of the partitions on your xbox hard drive
It will copy everything to the E:\ partition only
It will over-write your existing evox.ini file on your C:\ partition
(Save your old one if you want)
It will not over-write any thing that you may already have on your xbox hard drive other than identical files that will stay the same
Some tweeking may be needed if you are installing on your existing hard drive
Here is a list of the emulators that it will install for you :atari
blissx
Gameboy_Color
Koleko-X
Mamedox
neogenesis
neopopx
Sega
smsplusx
vice64x
NES Emulator
xboyadvance
xSnes9x
Dashboards included that will run as apps...
Avalaunch Dashboard
UnleashX Dashboard (Has the ability to format partitions, password is "Xbox"
Media Players Included
XboX Media Center (Latest)
XboX Media Player
Just a few of the apps...
Boxplorer (Available on Boot also)
Configmagic (Available on Boot also)
DVD2XboX
dvdx