So, I have a Mac Mini3,1. Early 2009 I believe. I have rEFIt installed. My issue is rEFIt will not boot from my usb installer. I have no CD Drive, and thus cant install via CD. I made said USB Drive with the guide "". I have noticed that my computer tells me the usb can't be read when I plug it in. I have tried with multiple downloads of xubuntu, and ubuntu and have md5'd them all. The rEFIt error is something like, "firmware cannot boot from selected hardware." And after I try booting from the usb, I have to restart to boot to anything else, or it will error with "boot.efi missing", or something like that.

Any ideas/help/links?