Firewire 800 port not working

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Level 1

41 points

Firewire 800 port not working

I have a 24" iMac with FW 800 and 400 ports. The 400 port works fine. I have two external drives that I connect to the computer, both with FW 800 and 400. When I try to connect them to the 800, they do not mount. When I connect one to the 400 and daisy chain the other through their 800 ports, they both mount fine. They can both mount on other computers with FW 800 ports without a problem.

I plan to call Support on this, but thought I'd look for some answers here first before getting on the phone for a long time.

I am running Leopard, 10.5.8

Thanks,

iMac intel, Mac OS X (10.5.8)

Posted on Dec 29, 2009 9:16 AM

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Answer 1

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den.thed

Level 9

77,296 points

Dec 29, 2009 9:25 AM in response to Daniel Peck

Hi Daniel

Reset the iMac's SMC > http://support.apple.com/kb/HT3964

+1. Shut down the computer.+
+2. Unplug the computer's power cord.+
+3. Press and hold the power button for 5 seconds.+
+4. Release the power button.+
+5. Attach the computers power cable.+
+6. Press the power button to turn on the computer.+

then try connecting one drive at a time on the FireWire 800 port.

Dennis

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Answer 2

Daniel Peck Author

Level 1

41 points

Dec 30, 2009 9:17 AM in response to den.thed

Thank You, that worked perfectly!

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