Right I have XP (Pro, 32 bit, SP3) installed on my C: partition and I installed the 7 beta (the public beta, build 7000, 64 bit) onto my F: partition. The install process went fine no issues. But when the install completed it just boots straight into XP with no option to boot into 7. Edit: I dunno if its important or any issue but XP and 7 are both on the same physical hard drive, just different partitions. I have another hard drive, its only an old 8GB IDE drive I found lying around (planning to install Ubuntu onto it using WUBI for a play around later, but thats not for discussion right now). End O' edit! Basically what I need to know is what to add to the boot.ini to enable dual booting to boot into 7. I have done some googleing, but I cannot find an example of the boot.ini for dual booting XP and 7. I am aware that vista onwards do not use the boot.ini anymore and now use BCDEDIT, the problem here is that I cannot get into 7 to use this and edit it. Currently I my boot.ini contains the following: [boot loader] timeout=30 default=multi(0)disk(0)rdisk(1)partition(1)\WINDOWS [operating systems] multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /noexecute=optin /fastdetect I just added: multi(0)disk(0)rdisk(0)partition(3)\WINDOWS="Microsoft Windows 7 Beta" to the bottom of it to see if it would be that easy and work. It didn't it threw up an error when I selected the 7 option to boot to it. Windows could not start because the following file is missing or currupt: <Windows root>\system32\ntoskrnl.exe. Please re-install a copy of the above file. So yeah basically I just need to know what to put into the boot.ini to have two working options to boot into XP or 7. I can provide more information if it is required, any help will be greatly appreciated.