Firewire enclosure not recognized

i recently bought a generic FW enclosure. mac mini ignores it completely. its like it doesnt exist (no device connected).
the device seems to be working fine in USB mode, but i want to use it trough FW
any ideas what should i try?

Since USB is processor controlled and FW has it's own controller, it is not uncommon to find devices where one or other bus is fine and the other isn't.
In your case, it may be that the FW chipset in the external drive is faulty, or has failed in some way, or if you have no other FW devices to test it with, that the FW interface in your mini has failed.
In the event of the latter it may be all you need to do is reset the system. You don't say whether yours is an Intel mini or an earlier PPC one, however reset as follows, making sure you use the right procedure depending on which system you have:-
If an Intel mini, reset the SMC as follows:
-From the Apple menu, choose Shut Down (or if the computer is not responding, hold the power button until it turns off).
-Unplug all cables from the computer, including the power cord and any display cables.
-Wait at least 15 seconds.
-Plug the power cord back in, +making sure the power button is not being pressed+ at the time.
-Then reconnect your keyboard and mouse to the computer.
-Press the power button on the back to start up your computer.
If a PC mini, reset the PMU as follows:
-Unplug all cables from the computer, including the power cord.
-Wait 10 seconds.
-Plug in the power cord +while simultaneously pressing and holding the power button+ on the back of the computer.
-Let go of the power button.
-Press the power button once more to start up your Mac mini.
If that does not help, and with the drive connected with a FW cable and powered up, open Disk Utility (in Applications>Utilities) and let us know if you see the external drive listed on the left.

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Firewire enclosure not recognized

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