Installing FC18 on a multi boot (Fc and SUSE) machine

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http://forums.fedoraforum.org – So far I've spent over 1 hour trying to install FC18 on a multi-boot machine that also runs SUSE linux. In short I want to install FC18 on /dev/sdb while retaining SUSE on /dev/sda As part of this, I don't wan't to overwrite the SUSE boot-loader which in installed on /dev/sda MBR, just chain load from that to FC18 GRUB. This was a simple task in FC17. Has anyone been able to set up a multi boot system using FC18? How di you resolved boot-loader installation and configuration issues? (HowTos)