kamsmam
Basically, you need to edit the file C:\boot.ini, remove the entry that you
don't want, and then remove the systemroot for this operating system.
To access boot.ini, open a command prompt and change directory to C:\, then
type "attrib -r -h -s boot.ini". The file should now be visible.
Next, delete the files on the partition where the second install is
located.
Best regards
Bjorn