Firewire 800 port suddenly not working

Hi,
I own an Imac 2.8 GHZ computer. It has worked flawlessly since I bought it. Suddenly when I turn on my external firewire hard drive it won't mount. This drive mounts on every other computer and will mount if I connect it via the Firewire400 port. I have tried using different cables and I still get the same result.
I am running 10.5.5 and have 4 gigs of Ram
Thanks

Gary,
Try doing a SMC and PRAM reset:
1. Turn off your iMac and unplug everything from it for 30 seconds.
2. Plug in the power cord, keyboard and mouse only.
3. Press the power button and immediately hold down the Option, Command, P & R keys until you hear the second gong then release the keys. Your machine will start up normally, then check for the issues you are having.

Similar Messages

Firewire 800 port no longer works

my time machine backup for years on my 2.8Ghz iMac Extreme has gone through the FW 800 port to the same WD drive. unfortunately i recently had backup failure issues, but did discover that it still worked through the FW 400 and USB ports (all of which are inputs on the back of the WD My Book). with no other FW 800 port in the house to test, i naturally assumed that the problem was in the notorious WD drive's port. and i wanted my faster backup speed back. so i actually got WD to swap out for a new external drive under warranty (it's 3 years old, i have no idea why they did it, but hey.....). however, on arrival today, the iMac's 800 port now appears to be the initial troublemaker since i still get no response from it, but everything works just dandy through the 400 and USB ports once again.
so now that i know the trouble is actually in my iMac, is there anything i can do except for applecare, which i have on this machne until november 2010? the nearest apple store is literally several hours away as we live in the boonies of upstate new york. so for me, applecare is always the last option. so far i blew compressed air at it just to clean it out, but that's it. if i take the back off, are there any odds that i may find a loose wire or something? i'm not sure if i've ever opened this particular iMac, so i can't remember what it looks like in there, and don't know if it's worth a disassembly.
any advice appreciated!!

It might be something you can address. Have you done either SMC or PRAM reset? At the very least I would do that.
If that doesn't take care of it you can run a Apple Hardware Test to see if there is a hardware problem.
After you have done these actions and it still doesn't work definitely call Apple, the US number is: 800-275-2273. When you call let them know what troubleshooting steps you have taken.
Regards,
Roger

Firewire 800 port doesn't work for cameras but works for Ext drives

I have a Power PC G5 1.8 running 10.5.8
I have a 9 pin FW 800 port on the back that does not work for cameras, trying to capture video into Final Cut Pro. But works fine when I hook up an external hard drive to it.
Does anyone know why that is? It used to work, now it doesn't. Any suggestions?

Does System Profiler>Hardware>Forewire tell us anything when the Cameras are plugged in FW/800 port?
Do the Drives have an extra FW/800 port to plug the Camera in?

2 different expresscard/34s with 2 firewire 800 ports are not fully recognized on new macbook pro 17" under lion

We have 2 expresscard/34s, a Belkin ec1394b2 and a Startech "FireWire 800 ExpressCard". Both are "reported" to suppport OS X but neither does more than show "PCI FireWire 800 ExpressCard" in the available interfaces list in Network Preferences with a status of "Not Connected". In the System Information report under "FireWire Device tree" it shows the built-in FW 800 port as "FireWire Bus" with a drop down arrow which expands to the proper hard/software dtails and then "FireWire Bus" with no dropdown arrow, no more info.
Now that I have them I see no reference to mac or OS X but I've seen a number of reviews of these cards from OS X users who claim to be using them happily. It's a long weekend so everyones tech support is gone gone gone. Any suggestions?

A) It seems your problem is an hardware failure. It happens and I don't think the way you use Firewire devices is the cause of that problem. It's just bad luck. That said, it's probably a good thing to use the power supply of your hard drive instead of bus-power.
B) If you want a new computer and you don't need something portable, I think the iMac is an excellent choice for the price. Over a Macbook Pro, you'll gain a bigger screen, FW400 port, etc, and you'll pay less than if you buy a laptop.
C) If you still want to go with a laptop, you can hook the Duet to your hard drive but I don't think the bus will be able to power both devices. Therefore, you'll absolutely need to use your hard drive's power supply.

Sound and USB ports suddenly not working

I have HP pavilion dm3-1103au which i bought about 3 years ago.. Everything was worked fine since the first time I use this notebook until about 3 weeks ago when I used it to watch a film suddenly the sound changed to noise sound and then my notebook sound not coming out at all from speaker and headset.. Then I restarted my notebook and then the sound working normally but after a moment the sound stop coming out again..
I check my sound driver to see any updates but it say my driver are up to date.. Then I go to sound control and test my speakers but it shows a warning that says "the device is being used by another application. Please close any devices that are playing audio to this device and then try again." I dont know what application that is using the sound because it happen when I didnt open any app..
After about several days later, the problem seems to became worst.. All USB ports suddenly have a problem too.. My USB mouse stop working at random time.. Then I try to insert my flashdisk and sometimes it can be recognized but when I try to copy files to my flashsdisk, it disconnected when the process of copying has not finished..
when i go to device manager the 'standard openHCD USB Host Controller' have a warning sign.. I check for updates but it says the driver was up to date.. So I try to uninstall it and restart my notebook.. but it didnt solve the problem..
I have reinstall and upgrade my windows from windows 7 to windows 8 but it still have the same problem and become worst.. now the sound not coming out at all from the speakers and headset from the windows starts.. Please help me.. I have no idea what cause the problems.. I think it's not hardware related..

Hello lynz00,
Did you check out this page to see if your computer has been tested by HP with Windows 8, prior to upgrading to Windows 8?
HP is not going to support hardware for Windows 8 on any system purchased before Oct 1st 2011. I realize your issue began prior to upgrading to Windows 8, but don't think the upgrade is the way to fix it.
Did you backup everything in Windows 7 in order to downgrade, prior to upgrading to Windows 8?
↙-----------How do I give Kudos?| How do I mark a post as Solved? ----------------↓

LaCie Firewire 800 expresscard 34 - not working

Just received this card. Not working well.
- My Mac completely freezed 3 times in 10 minutes (by inserting the card in the Mac or inserting a cable in the card)
- It did not allow me (when not freezing...) my external Firewire Canopus card. Same for my external Firewire audio card.
- Surpringly, worked OK to detect my external Firewire disk drive.
Anyone had problems like this?

Hey don't know if you ever sorted out your problems ad after tht response about "no help for 3rd party blah blah" you've probably stopped using this site.
Firstly if you have a 3rd party anything that you're using with a mac - you're in the correct place on this disscussions forum.
Good Luck sorting your problem and to the unhelpful troll that responded to you "get a pc mate" you're on the wrong team.

Satellite c855 - VGA port suddenly not working

Hi people
I've got the toshiba-satellite c855-17c. windows 7.
I usually work on my laptop and a monitor, which i use by plugging in the vga cable. I've been using that set up for more than a year and never have any problem.
Now, nothing happens when i plug in the cable. i checked with another laptop and the screen does appear on the monitor - so it seems the problem comes from my laptop.
Would you have any idea why this happened and the solution to this problem?
Thanks,
Ben.

Hmm very strange
I dont know why this happened but you could try following steps:
1) go to BIOS and set it to default settings (F9)
2) uninstall the graphic card driver (in device manager -> graphic card -> uninstall driver)
3) after the GPU driver has been uninstalled, reboot the notebook and install the display driver which you could download from the Toshiba EU driver page
4) shut down the unit
5) remove battery and AC adaptor. Press and hold power button 30 sec long. Put the battery in and connect AC adaptor and power up the unit.
Good luck

Firewire port - does not work

Firewire 800 port does not work on my iMac, mid 2010 version.
If i plug in an external disk with external power it does not work. Sometimes the disk are recognized, but then it says its half the size it really is.
On small disks without external power it works.
I have tried 6 different LaCie disks with firewire 800 - all works on my macbook pro.
I have tried 2 differne western disks with firewire 800 - all works on my macbook pro.
All disks works as they should with USB.
Is it possible to reset the Firewire port?
If so, please send me a LINK. This support pages are **** to find correct answers…

While you can't reset the FW port on it's own you can do a number of different resets including SMC & PRAM resets, you can also restart in Safe Mode which will clear some caches. It's possible one has become corrupt. Try these first and sff i you have any luck. Make sure ALL peripherals except the keyboard and mouse are unplugged when doing the resets. Also it is not a bad idea to do each reset 2-3x to ensure it's worked.
SMC RESET
Shut down the computer.
Unplug the computer's power cord and all peripherals.
Press and hold the power button for 5 seconds.
Release the power button.
Attach the computers power cable.
Press the power button to turn on the computer.
PRAM RESET
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

IMac 21.5",3.2 ghz i3. has dead firewire 800 port.

Like it says firewire 800 port does not work. I plug in a known good ext HD. With known good cable. Power light on HD comes on & I can hear it spinning
but it never mounts to desktop. Doesn't show up in Disk utilities either. HD mounts fine if I use usb port. I know FW 800 port on HD & cable are both good
because they work fine on friends 27" iMac. Anybody have any ideas or suggestions. I would really appreciate it.
Thank you in advance
HAPPY HOLIDAYS

I have tryed that. I've also tryed resetting the SMC, & the PRAM. Thank you for the suggestion.
From what I've been reading on this site, it sounds like I don't have any choice but to bring the
iMac into the service center. I am glad I got Apple care. Otherwise I would be screwed. My iMac is just over 1 year old. Once again Thanx for your time & help. Appreciate it. Have a Great Day

FireWire 800 ports on 12-Core Mac Pro are not working

Just got this machine, suddenly the firewire 800 ports don't work.
Says: FireWire Bus:
Warning: Unable to list FireWire devices.

If it says that with no devices plugged in, it needs to go back to the store for a visit or exchange.
If it only says that with your devices plugged in, I would be more suspicious of the devices than the Mac. But it could be either, so you need some other known-good stuff to make progress.

Rear FireWire 800 port not working

After installing Leopard, I connected my TimeMachine external FW 800 drive to the rear FW 800 port, but it was not recognized. I also have an external drive connected to the rear FW 400 port, and it works normally. After some experimentation, I found that if I unplug the FW 400 drive, the FW 800 port becomes active allowing the TimeMachine drive to mount. But any time I use the rear FW 400 port, the rear FW 800 port doesn't work.
The front FW 800 port works normally, and I'm using it for TimeMachine. But I'd like to keep the front ports open for tempory use.
Before calling AppleCare about this, I thought I'd see if anyone has any suggestions about things to try.

Thanks--I tried power cycling (as well as some other suggestions found on Mac sites) but so far, nothing has worked. If I start up with just the FW 800 drive connected to the rear port, it mounts. But as soon as I plug a cable in to the adjacent FW 400 port, the FW 800 hard drive dismounts with the error message that it wasn't unmounted properly. The FW 400 cable is connected to a powered FW hub, but none of the devices connected to the hub are powered on. I also tried another FW 400 cable connected directly to a FW 400 hard drive instead of the hub, but the FW 800 drive still won't mount.
I'll call AppleCare and see what they say--not looking forward to taking the Mac Pro into the shop.

IMac firewire port is not working

iMac firewire port is not working
Hi everybody, Happy New Year.
I am a 72 years old semi-newbie in video editing, because Iedit only 1 or may be 2 movies a year since 2007 and I have only very little computer knowledge.
I received a new 27” iMac as a birthday gift 14 months ago. About 10 months ago, with help, I successfully use the Migration Assistant to transfer some datas from my old power G4 to the iMac including two Final Cut Express projects. I had one project successfully done; burned to DVD and I save it with Print To Video. Last week, I have my second project done, I burned the sequences into DVD but unable to do a Print To Videodue to the iMac is not communicating with my Sony camcorders DCR VX1000, this is the same camcorder I used on the last job which was working a couple of months ago.As a result, I try to switch the Easy Setup with different Format and different Use; I refresh the Canvas window; I did a Mix down; move the Screen Saver to NEVER as well as the Energy Saver set to NEVER SLEEP. I also trashed the preferences (plist) folders; run the Utility repair, I replaced the firewire cable (4 pines – 9 pines 800), but nothing work. Up to this point, I think that there is no signal from the firewire port to the camcorder because I understand when the sequences is ready, the firewire is connected between the computer and the recording camcorder, the Print to Video is activated, then the word DV- IN should be seen on the recording deck screen. This time, I don’tread such words on the recording screen. Therefore, I think there’s no out going signal from the iMac to the recording camcorder and the iMac is not receiving signal from the recording camcorder. At this point, I try to connect my iMac to the power G4 to see if I can do some data transfer. Follow the procedures, I hook up the data transfer cable between the G4 and the iMac, I can the fireswire icon moving on the G4 screen but no indication on the iMac screen (there should be some indications in the source bar), this shows me the iMac did not recognize the G4 which worked on previous data transfer. It looks to me the firewire port on my iMac is dead. What has gone wrong? Could I accidentally disabled the firewire port by some magic keystroke? (i.e. accidentally fat finger some thing to make it stop working? Oh, by the way, during the playing around, went to the Final Cut tool bar, I click the View >Video Out > Digital Cinema Desktop Preview – Main, the result was a black screen and the esc key was my rescuer - LUCKY LUCKY! Are there any other trouble-shooting techniques to apply before bringing to shop? Please help!
Sorry for such a long statement, forgive me for unable to make it shorter. Thank you for your patience. Thanks to all the folks in this board for being so helpful.
p.s.

Not sounding good.
If the system Profiler does not see it then there is a basic communication problem between camera and the Mac.
I'm thinking the Firewire port is the culprit as some 800 ports were faulty.
I'd suggest taking the Mac, cable and camera to your nearest Authorized Apple Service Centre and get them to diagnose the issue. eg. let them try to connect the two devices.
Right (control)click the Sequence icon in the Browser and select Item Properties, do the same for a clip.
You can also post screen shots for the Properties.
Al

Firewire 800 port on new MBP not mounting Lacie rugged 500GB drive

Hi all
I've just purchased the new MBP 17" and my Lacie Rugged 500GB drive will not mount.
It will mount over USB though.
I've tried three different FW800 cables and no result.
There are some posts around 10.5.7 update issues, but I've tried everything listed and no dice.
Any help would be appreciated.

I had a Western Digital My Passport Studio model like that. It has nothing to do with cables or your laptop. It has to do with manufacturers who fail to adhere to the proper power standards for the interface. Basically, if the drive demands more power then the port will give, it is never going to work.
I returned my WD to Apple for a refund, and instead tried a SeaGate FreeAgent Go firewire 800 drive. It has worked flawlessly over Firewire on my MacBook Pro, and it even came with both a Fire 800 cable, a firewire 800-to-400 cable, a USB cable, and a special USB power cable so you could draw additional power off the USB ports if a firewire 800 port wasn't putting out sufficient power. That's why I bought it - figured one way or another it had to be able to work on bus power (even if it had taken both the firewire and USB bus in combo to do it).
Another option I've had good luck with in the past is OWC Mercury on the Go drives (eshop.macsales.com). These have always worked fine on bus power for me, but they also have an optional external power supply too, just in case.

How do I capture tape-based media to my external hard drive? There is only one firewire 800 port on the back of my I mac. The manual says to import tape footage directly into fcpx, but then I lose my external hard drive. thanks for your help.

In FCP X How do I capture tape-based media (hdv clips)- which I want to import-to my external hard drive? There is only one firewire 800 port on the back of my I mac. The FCPX manual says to import tape footage directly into final cut, which works, but then I lose my external hard drive Do I have to import it into an event, then copy it over to an external hard drive? On Larry Jordan's tutorial, he has 3 external hard drives that show up on his monitor WHILE he imports his tape based media. How is that done? I can only get either the camera to appear OR my external hard drive. thanks for your help.

Thanks for your response, but that doesn't solve the problem. Yes, the LaCie hard drive has 2 firewire ports-
I have always done what you suggest (works fine in FCP7), but in FCPX when I do that the camcorder icon
does not appear. It only shows up when I DIRECTLY import the footage via firewire. ????

Broken FireWire-800 port?

Hello,
I've bought a LaCie HDD with especially a FireWire-800 port because I use it to place movies on it and edit it with iMovie. Only when I connect the HDD with FW800 it does not show that it's connected on the iMac, with USB 2.0 it does show it, but that is too slow for me. First I thought it was a cable issue. And I even did an Apple Hardware Test which did not give a negative result. Then I took my HDD to test it on another iMac, there it did work. Does that mean my FireWire 800 port on my iMac is broken? What should I do now?

Greetings,
Your testing does indeed indicate an issue with that port.
Reset the SMC and then test: http://support.apple.com/kb/HT3964
Reset the PRAM and then test: http://docs.info.apple.com/article.html?path=Mac/10.6/en/26871.html
If the issue persists after you follow the above steps, make an appointment with a Mac Genius at an Apple store, contact AppleCare via phone, or contact an Apple Authorized Service Provider for assistance.
Best of luck.

Firewire 800 port suddenly not working

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