i messed with my xbox tons of times and i was foing to mod my friens with a different porgram i got and it delete my C drive on me and i have no idea of what to do to get the MSDASH back and the other stuff like epprom---PLEASE HELP----
Next time read the GIANT readme file...it didn't delete your C, you did. You are going to need to run XboxHDM, which will envolve putting your Xbox HD in your PC. Search for it.
Shit, look like you need a modchip now. If you already had one, try to dl some autoinstallers (google x-disk, xboxhq). Then burn it to CD/DVD and install it.