The classic Startup Disk cp might not be the appropriate tool for multiple systems on a multi-partitioned harddisk drive.
My suggestion is HDT (this post contains a copy from How to prepare dual boot system?). HDT permits to make your choice at boot time (nearly as good as the trick with the depressed option key on recent Macs).
My suggestion is HDT (this post contains a copy from How to prepare dual boot system?). HDT permits to make your choice at boot time (nearly as good as the trick with the depressed option key on recent Macs).