After I upgrade my parallels to Build 5160, I have two "Parallels configurations" lines in the booting screen and it looks like the first one is always selected. Here is the screen I'm getting when boot up. Parallels configuration Parallels configuration Microsoft Windows XP Professional And then the content of boot.ini looks like this: [boot loader] timeout=1 default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS [operating systems] multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Parallels configuration" /fastdetect /NoExecute=OptOut multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Parallels configuration" /fastdetect /NoExecute=OptOut /kernel=ntkopvs_.exe /hal=halopvs_.dll multi(0)disk(0)rdisk(0)partition(3)\WINDOWS="Microsoft Windows XP Professional" /noexecute=optin /fastdetect /kernel=ntkopvs_.exe /hal=halopvs_.dll /kernel=ntkopvs_.exe /hal=halopvs_.dll I'm just wondering if I can remove one of them, and if it is OK, which one should I remove? Also, I would like to know why Parallels use this when boot up.