While trying to figure the Code 5 error I have on one PC, I'm trying to install on another. All goes fine until I get the partition/disk to choose. I've only got a single disk in and I have a 40Gb partition spare on it which I select. When I press Next I get this message - Setup was unable to create a new system partition or locate an existing system partition. See the setup log files for more information. There is no option to look at the log files so I can only cancel. I have tries deleting the partition and formatting it and they both run fine. I have also tried a SATA disk and that gives me exactly the same result. Does the disk have to be completely empty before W7 will install?