Bootstrap.ini

This little gem can be found in MD under your deployment point settings. Just click on the Properties of your distribution point and go to the Rules Tab. At the bottom you'll see a link for bootstrap.ini. Here's mine (well almost I changed the username and password.):

[Settings]
Priority=Default

[Default]
DeployRoot=\\SRV-BDD01\Distribution$
SkipBDDWelcome=YES
UserID=deployadmin
UserDomain=mydomain
UserPassword=GoIndians!


What is it used for? Well, somehow WinPE grabs this file and uses it for authentication to the MD server when it boots up. Without this, WinPE runs but can't get at any of the MD stuff on the distribution share. It's probably used somewhere else in the build process, but so far that's all I know about it.