Disk Warrior 4.0. Can I install it on Leopard to use on Tiger disk?

Hi,
I have a Mac Pro with 2 boot disks, 1 Leopard and the other Tiger. Can I install Disk Warrior V4.0 on my Leopard volume then boot into Leopard to use DW to diagnose/repair my Tiger volume... which is the one I still use? I had heard V4.0 was not Leopard compatible... but I am not sure if that means you can't run DW V4.0 from a Leopard volume or just not to repair a Leopard volume.

Nothing, or buy a new iPhone. Your 3G cannot use iCloud, which you need for Find My iPhone.

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Yes.
the recovery partition is somehow for fixing a problem
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