Right, this is a different link to the one I found earlier but it might be an easier solution.
http://support.microsoft.com/default.aspx?scid=kb;en-us;330140
It looks like GoBack messes with the MBR or partition table on the disk and needs disabled. In the workaround where is says "configure hard disk as primary master" you need to ignore this and change the boot priority instead so that the system is set to boot from the RAID array rather than the 80Gb disk as is at the moment. Don't worry that there's no OS on it, all you need to do is be able to get at the GoBack menu to disable it.
There is another option which involves using a free download from Partition Magic but I've lost the link and instructions. Try the above and if that doesn't work I'll have another search.
http://support.microsoft.com/default.aspx?scid=kb;en-us;330140
It looks like GoBack messes with the MBR or partition table on the disk and needs disabled. In the workaround where is says "configure hard disk as primary master" you need to ignore this and change the boot priority instead so that the system is set to boot from the RAID array rather than the 80Gb disk as is at the moment. Don't worry that there's no OS on it, all you need to do is be able to get at the GoBack menu to disable it.
There is another option which involves using a free download from Partition Magic but I've lost the link and instructions. Try the above and if that doesn't work I'll have another search.