Problem: mounting multiple Firewire devices

I'm using a Mac Pro (early 2009) which has 4 Firewire ports.
Today I connected two Firewire Compact Flash readers (I want to be able to export files from two cards at the same time). The first CF card mounted properly. When I put the second CF card in the second Firewire CF reader it caused both readers to crash. The error message reads that I didn't disconnect the card reader properly (which doesn't make any sense).
Does anyone know what the problem is?

Ok, I just found out what the problem is.
The Firewire readers which I use (Hama Traveldrive) have the same ID.
That's why the Firewire bus crashes once I insert the second CF card in the second reader. I just sent the support an email and asked if it's possible to manually change the device ID.

Similar Messages

Problems using multiple firewire devices

Hey peeps
im working on a project in FCP and im reading the video and audio from an external firewire 800 hard drive, this works fine until i start to use my m-audio project mix to output the audio when i use both of these firewire devises together the sudio gets delayed.
I'm led to believe this is because the different firewires on my mac tower all use the same bus, is this true??
and if so
can i get another firewire bus for my mac???
any help in clearing this up for me would be greatly appreciated
seano56

You can't use the Project Mix on the same bus as your firewire drives. In fact it needs to be on its own bus. I believe that M-Audio even specifies this on the FAQ for the device.
Also, I've seen playback issues when you try to mix FW 800 and FW 400 devices on one bus. The way that FW works is that when you have multiple devices on the same bus, the whole chain slows down to the speed of the slowest device. So, even though the Project Mix uses a FW 400 connector, it may actually be operating at a lower speed like 100 Mbps. Thus the whole bus would slow down to 100 Mbps. I don't know the actual speed of the PM i/o, but this is just an example.
http://www.m-audio.com/index.php?do=support.faq&ID=b285a2ca2105f98a8f89704091cab 226

Incompatibilities between multiple firewire devices

Hi there,
I've got a bit of a problem on my mini G4 with my new Lacie FW hard drive. I've got two firewire devices: the Lacie mini and the Miglia Harmony Audio. After every startup the audio device is dead. Unplugging and reconnecting it fixes the problem temporarily.
Miglia recommend that (for recording purposes) the sound device should be the first in the firewire chain, ie. no devices in between. This means I would have to disconnect the entire FW chain after every boot or sleep. However, I've tried pretty much every other chaining combination, and it doesn't make a difference to the problem.
1. Have you got any idea how I can activate the sound device without unplugging?
2. What do you think about Miglias recommendation regarding the position in the chain? Is it to be taken seriously?

I think the problem might be something else. From the system profiler I can see that Mac OS does recognise both devices (see dump below). I can even select the Harmony Audio in System Preferences, but it fails to play any sound.
If I reconnect the Harmony Audio device, the information that appears in System Profiler is essentially the same, only the Audio device appears at the top, rather than at the bottom.
Do you think the problem may be related to FW power? The Harmony Audio is normally bus-powered and doesn't come with an AC adapter. I will try hooking up an AC adapter some time.
Below is the dump from System Profiler. Sorry, the output is actually in German, couldn't be bothered to switch, but it should be pretty self-explanatory anyway.
FireWire Bus:
Maximal: Bis zu 400 MBit/s
LaCie mini Hub FW:
Hersteller: LaCie Group SA
Modell: 0x1
GUID: 0xD04B7619086558
Maximal: Bis zu 400 MBit/s
Verbindungsgeschwindigkeit: Bis zu 400 MBit/s
Untereinheiten:
LaCie mini Hub FW Unit:
Softwareversion des Geräts: 0x10483
Spec-ID des Geräts: 0x609E
Firmware-Version: 0x102
Version des Produkts: 3.AA
Untereinheiten:
LaCie mini Hub FW SBP-LUN:
Kapazität: 298.09 GB
Wechselmedien: Ja
BSD-Name: disk1
OS 9 Treiber: Nein
S.M.A.R.T.-Status: Nicht unterstützt
Volumes:
Externe Festplatte:
Kapazität: 223.55 GB
Verfügbar: 194.15 GB
Beschreibbar: Ja
Dateisystem: Journaled HFS+
BSD-Name: disk1s3
Mount-Point: /Volumes/Externe Festplatte
Sicherung:
Kapazität: 74.29 GB
Verfügbar: 57.88 GB
Beschreibbar: Ja
Dateisystem: Journaled HFS+
BSD-Name: disk1s5
Mount-Point: /Volumes/Sicherung
OXFW 970:
Hersteller: Miglia Technology Ltd.
Modell: 0xF970
GUID: 0x30E00200454647
Maximal: Bis zu 400 MBit/s
Verbindungsgeschwindigkeit: Bis zu 400 MBit/s
Untereinheiten:
HarmonyAudio Unit:
Softwareversion des Geräts: 0x10001
Spec-ID des Geräts: 0xA02D

If You're Having a Problem Mounting with Firewire...

... Try using a USB cable instead.
I was at my wits' end with my 3rd generation 20GB iPod as it stopped mounting anywhere on my system with a Firewire cable. I borrowed a USB cable and it connected without problems.
I doubt it'll work for everyone, but it's definitely worth borrowing/buying one to see if it solves the problems. I guess that as the new iPods are USB the software updates are configured towards that connectivity too.
Worth a go...
Jess

Jess, thank you so much. I was having the same problem. My 20 GB dock iPod has never worked reliably with FireWire. I have been amazed that Apple has been so technically incompetent at making this work as advertised. Since day one it has given me nothing but trouble, requiring hours of trying this and that, and then it would start downloading and then just hang. It is taking forever to download 18 GB of songs with USB, but at least it is working, and worked perfectly the first time I tried it. There was a posting a while back to get rid of the dock and use the straight cable, and that seemed to help some, but in the meantime it seems almost totally broken with FireWire and 10.4.6. I have tried everything Apple says to try, and nothing has gotten it to work reliably, until you came along! Thank you, thank you, thank you, I am so relieved to have it finally work! I never dreamed the fix would be so simple. But I do hate the slow speed; I'm downloading about 300 songs per hour, so it will take about 10 hours to finish (in total despair, I reinitialized, which didn't help either, before I switched to USB). One thing is different with USB: The iPod "charging" icon is blank; I sure hope it is charging the battery nonetheless, so that it won't run out of power in the middle of the 10-hour update. -Ron
Original flat-panel iMac Mac OS X (10.4.5)

Problem connecting multiple ios devices in a session using GKSession

Hi everyone, Here's my problem.
I am a beginner in iOS apps development and I am developing an application that requires to connect from 3 to 6 devices together using Bluetooth.
I am not using GKPeerPickerController since it does not allow me to define a Server and Clients.
Instead, I am using GKSession to define a server in GKSessionModeServer and for the moment two clients GKSessionModeClient.
I use the peersWithConnectionState:GKPeerStateAvailable method to find the server and it works fine.
Now the problem is that when I get the server peerID and try to connect the clients with the server using connectToPeer:serverPeerID withTimeout:10, it takes each client from 5 seconds to 5 minutes to join the server in his session. The problem is that it takes a long time for the server to receive the connection request from each client.
Now when I try to connect them when the server changes his state it works without any problem cause I can get the GKSession instance of the server in the method that is called in the clients code when the server availability changes from NO to YES.
My questions are:
- Is it normal that it takes so long for the server to detect the connections requests from each client?
- Is there any other way to establish a connection between devices in a server-client mode using Bluetooth or WiFi?
Thanks for your help and time.

This is a user to user help forum for iPhone users, not for app developers with app development questions.
As a registered developer, you have access to Apple's developer discussions area which is for app developers only for app development questions and answers.

Issues with multiple firewire devices

Over the past few months, I've noticed issues when daisy chaining FW devices to my MBP (a 15" purchased September 2009. Specs are posted in the signature). It often seems that a third device causes connectivity issues. 2 will always work fine (any 2) and of course 1 device is a no-brainer. But as soon as I add a 3rd to the chain, stuff happens, Specifics:
This usually involves 2 hard drives and an audio interface.
The audio interface has a FW 400 input. The hard drives have 800 and 400, among other options.
Since I can always successfully run any 2 devices without issues, I have to eliminate the drives, cables, or the new audio interface as a problem (??)
I'm not aware of any storm or electrical surge to have done damage. Anything is possible, of course.
For my day-2-day work, I need both drives and the audio interface up and running.
Data always seems fine.
The main question is are there any known issues with the FW port/chip on these MBP's. But also, how can I test the FW port integrity?
Thanks in advance for any advice.

When the controller is first plugged in (via usb), a logic popup finds and asks if i want to use this device in logic.
Logic is asking you if you want to use that audio device as Logic's audio driver.
This is entirely independent of MIDI - any MIDI sent to OSX from whatever MIDI device will show up in Logic.
Is there a way in Logic to turn off reading midi for certain devices. I dont want to shut down midi completely as I also use a midi keyboard which works without issues.
Yes, you want to filter out the MIDI coming from that particular port. Open the environment window, go to the Click&Ports layer, and New -> Instrument, call it "Null" or something and make sure it's set to no output port in that object's inspector parameters.
Now, cable the desired MIDI port on the "physical input" object that corresponds to your device, to this "Null" instrument. Now, all MIDI data coming into Logic on that port will be effectively nuked, and will not reach the rest of Logic and interfere with other things.
Of course, you'll need to save this setup as a template or song in order to use it in the future.

Can I mount a firewire device in single user mode?

I've still got this idea I can rescue data from a hard drive that won't mount.
I put my external backup drive on another iMac to simulate what would happen. Briefly,
I plug in the drive, note the device name.
I reboot into single user mode.
The drive automatically powers off. Grrr.
I turn it back on again. It does not show up in /dev

How far did you go under "single user" mode? In "Tiger", running 'sh /etc/rc' (instructions to use this are included among the messages displayed starting up in single-user mode) starts up all sorts of things. Perhaps plugging in the drive after the script has run will have it show up in '/dev/' (I haven't tested this)...

Problems with multiple USB devices. (Possible Low Power on USB Bus)

I believe I'm having an issue with the USB bus or one of my devices that I have installed on my iMac.
I purchased this iMac along with a printer (HP C4280 All-in-One) as part of a promotion deal. I also have wireless logitech USB mouse, and iPhone and an 80gb 5th Gen iPod.
My problem has to do with syncing the iPod and iPhone. Normally I have the printer attached to the iMac along with the USB mouse. Both devices function as expected. However I have problems when I connect the iPhone or iPod.
iPod Symptoms: When I connect the iPod the iPod screen shows the flashing red circle with a line but iTunes never launches and the iPod never syncs.
iPhone Symptoms: When I connect the iPhone the iPhone screen says Sync in Progress and iTunes does show the iPhone in the list of devices but a dialog appears giving me one of two messages (that I've seen so far) - [msg 1] Your iPhone is corrupt please disconnect then reconnect to restore. [msg 2] iPhone device timed out.
I've been dealing with this problem for a couple months and found that if I disconnect the printer (HP C4280) then connected either other device then everything works just fine.
I downloaded XCode 2.5 and launched the USB Prober utility. Then plugged in each device in turn and found some interesting findings.
When connecting the iPhone (1st attempt) the USB Logger reported; (iTunes displayed msg 1 from above)
128.517 [1] USB Device iPhone is violating Section 9.3.5 of the USB Specification -- Error in GetConfigDescriptor( wLength = 4)
128.520 [1] USB Low Power Notice: The device "iPhone" cannot be used because there is not enough power to configure it
128.528 [1] USB Low Power Notice: The device "iPhone" cannot be used because there is not enough power to configure it
128.629 [1] AppleIRController[0x2dc8e00]::RearmInterruptRead immediate error 0xe000404f queueing read, clearing stall and trying again(1)
When connecting the iPod (1st attempt) the USB Logger reported; (iTunes never showed that the iPod devices was connected)
938.797 [1] USB Device IOUSBDevice is violating Section 9.3.5 of the USB Specification -- Error in GetConfigDescriptor( wLength = 4)
938.801 [1] IOUSBCompositeDriver[0x39b9f80](IOUSBDevice) SetConfiguration (1) returned 0xe00002ed
938.900 [1] AppleIRController[0x2dc8e00]::RearmInterruptRead immediate error 0xe000404f queueing read, clearing stall and trying again(1)
When connecting the iPhone (2nd attempt) the USB Logger reported; (iTunes displayed msg 2 from above)
1789.023 [1] AppleIRController[0x2dc8e00]::RearmInterruptRead immediate error 0xe000404f queueing read, clearing stall and trying again(1)
1802.166 [1] AppleUSBEHCI[0x28a7000]::Found a transaction which hasn't moved in 5 seconds on bus 253, timing out!
1809.166 [1] AppleUSBEHCI[0x28a7000]::Found a transaction which hasn't moved in 5 seconds on bus 253, timing out!
I'm suspicious of the USB Low Power Notice. If this is true then I suspect the my iMac might need some type of repair. However I am also suspicious of USB Device violating the USB Spec Error. Although this is the message that appears when I plug in the iPhone or iPod I don't think I can assume that error relates to the iPod or iPhone. The error doesn't specify which USB Device is in violation.
My current workaround is to unplug the printer every time I sync the iPhone or iPod which is cumbersome. I'm also worried that repeated connecting/disconnecting of USB plug for the printer will over time damage the USB port.
I'm not sure what options I have here. Can anyone provide some suggestions or information that might provide some insight.
Best Regards,
xgnomex

A-Ha! Now I'm feeling like my 1.5 hours of reading this forum are not wasted, since I've found others with similar symptoms.
I've only had my iMac for two weeks today. I've got some new accessories & have experimented with the ones I've had awhile (various USB external drives). My model has 3 USB ports, one of which is taken by the keyboard, of course.
Over the weekend, I picked up an MS Office 2008 Upgrade and also an HP Officejet Pro L7680 all-in-one. I only mention the Office upgrade because I installed it on the same day as the printer, but it's possibly unrelated.
I actually have a Belkin 4-port hub--not the same one suggested in this thread, but externally powered with it's own A/C adapter. (It's a Hi-Speed USB 2.0 r-Port Hub, model F5U234 Rev.3, and I used it with a previous iMac G3 CRT with no problem.)
So with a LaCie 100 GB USB Mobile Drive in one of the iMac's ports, and the HP L7680 in the iMac's third port, or the HP via the Belkin hub in iMacs the third hub, here are some of the symptoms I've seen:
1) while browsing in Firefox, suddenly the mouse-cursor will "freeze" (get stuck) in a pull-down selector...sometimes it unfreezes, but eventually (like on the next pull-down menu) the keyboard & mouse will shut off (and if you wait & the iMac goes to sleep, the keyboard won't let me enter my unlock password when I wake the iMac with the Apple Remote)
2) when trying to open a document from the LaCie in MS Word, Word freezes and the keyboard & mouse go dead--terminal beachball--to restart the computer, I have to hold in the power button
3) when trying to print a message in Mail, Finder freezes (though the print job does finish)
These symptoms seem strange! Hey, it's just supposed to work, right? But everything has limits, so my question becomes, "how much stuff can I hook up at once?"
I wonder if this Apple article is addressing this issue:
http://docs.info.apple.com/article.html?artnum=25243
especially when it says "Two high-bandwidth devices or two isochronous devices cannot be connected to a single Universal Serial Bus (USB)."
So only two hi-speed USB devices can be connected "to the same bus" simultaneously? I'm not entirely sure I understand what "isochronous" means, but I'm thinking I need to peel my printer off the USB somehow, maybe via Airport Express--?
Does anyone know for sure about USB limitations? Thanks.
Also, xgnomex, how/where did you find that "USB Logger"? Is that something iPhone-specific, or is it an OS X log in a Library somewhere?

Firewire device causing problems when connected to Mini via LaCie ExtHD/Bus

Hello there..
Just bought LaCie 300GB Ext.HD/Bus(Firewire &USB). It was recognized by my Mini no problem. I have used the firewire connection between The HD and the mini. The problems begin when I try to connect my M-Audio firewire audio interface (it's mains powered, by the way) to one of the firewire bus inputs of the LaCie - then every action gets the dreaded spinning beachball and I have to shut down etc. The connection of this device has even prevented the HD being recognized by my system, in the case where I have tried having it already connected and powered up before switching on and connecting the HD to the Mini.
I've tried other things such as PMU reset, to no lasting avail.
This is the same firewire audio interface that has worked fine for months when plugged directly into the Mini, so why should there be a problem when it's connected to the bus port of the HD?
Now, as a temporary solution, I have changed the connection between the Mini and the HD/Bus from Firewire to USB - this means I can now use the FW port on the Mini to connect my audio interface (as before). The problem with this is that I work alot with video as well as audio, and have learned that it's very advisable to use firewire drives when working on video...but there is only one FW input on my Mini, so if the La Cie HD is using that, there is no port for audio interface to go in...that's why I bought this particular HD - more storage on a FW HD which has extra FW bus ports for such things as audio interfaces!
I hope I've explained the problem OK, thank you in advance for any advice.
Jimmy

You don't mention which model you have, but this is from the M-Audio Firewire 410 Manual Troubleshooting section:
The FireWire 410 has been designed to give you high performance and professional quality audio. It has been tested under a wide range
of systems and operating conditions. In the real world, however, there is a nearly infinite number of possible operating scenarios, any of
which could affect your system’s performance. Much like owning an automobile, “your mileage may vary.” This section can not begin to
cover all possible issues you may encounter, however we want to give you some suggestions on common problems you may experience.
One thing to avoid is connecting too many devices. The FireWire bus is a dependable, high-speed, high-bandwidth protocol which is ideally
suited for digital audio. Nonetheless, it’s important to remember that audio and multimedia streaming places considerable demands on
your processor and the FireWire bus. Although it is theoretically possible to chain many multiple FireWire devices in series, doing so may
potentially degrade your audio performance.
I guess this degradation could also affect the Firewire HD. Maybe there is a simple fix, but it sounds like the M-Audio people have been down this road before.

Firewire device looses connection when external screen is inserted into the thunderbolt port? HELP

HI
I am a recording studio engineer. Ive got a Firewire AD/DA Converter (Focusrite Saffire Pro 56) running from my Firewire port of my MacBook Pro, which is running OSX Mavericks. I've also got an external Screen I want to use as an extended display. I'm using a HDMI cable from the screen to a HDMI to Thunderbolt Converter which I then plug into my Thurderbolt Port.
As soon as I plug the screen in, the Firewire Port looses connection completely and I cant use or even choose the Saffire Pro 56 as audio driver. Another thing happens where the Thunderbolt port replaces the Saffire Pro 56 Driver with the screen as the audio output source.
Please help, there's nothing I can find to fix this.
Thanks Maurice

You don't mention which model you have, but this is from the M-Audio Firewire 410 Manual Troubleshooting section:
The FireWire 410 has been designed to give you high performance and professional quality audio. It has been tested under a wide range
of systems and operating conditions. In the real world, however, there is a nearly infinite number of possible operating scenarios, any of
which could affect your system’s performance. Much like owning an automobile, “your mileage may vary.” This section can not begin to
cover all possible issues you may encounter, however we want to give you some suggestions on common problems you may experience.
One thing to avoid is connecting too many devices. The FireWire bus is a dependable, high-speed, high-bandwidth protocol which is ideally
suited for digital audio. Nonetheless, it’s important to remember that audio and multimedia streaming places considerable demands on
your processor and the FireWire bus. Although it is theoretically possible to chain many multiple FireWire devices in series, doing so may
potentially degrade your audio performance.
I guess this degradation could also affect the Firewire HD. Maybe there is a simple fix, but it sounds like the M-Audio people have been down this road before.

FireWire warning: unable to list FireWire devices (red warning)

Hello dear Apple Community,
My last (fifth Apple Computer indeed) which is recent (iMac alu 24'' 2,4 ghz refurbly bought 3 weeks ago) shows me signs of unusual lack of reliability.
This computer works pretty much fine but I regularly encounter a FireWire issue with it after a few hours of work. Generally after a long period of standby I cannot mount my FireWire devices so I have to reboot the iMac. I must precise that my peripherals are not in trouble (I have tried several cables and external drives), but the computer must be.
I have tried to use another user account and I have also reinstalled entirely the OS.
The funny thing is that when the FireWire is not responding I cannot put the computer in sleep mode!
Each time I reboot it reworks again (until when is the question).
It bothers me in a way I never had to restart my previous Macs (the reason why I switched several years ago from MS to Apple Computer Inc.).
I begon to think I am the only one with it: either FW works 100 % or 0 % but not like my CPU.

Good news everyone,
I finally found the origin of my problem: it comes from the RAM.
When I use 1 slot with 1GB, 2 slots of 1GB each or 1GB + 2GB it works fine.
When I put 2 times 2GB it doesn't work because of the difference between the memories (the same bus but not the same manufacturer). I will try buying an extra 2GB RAM in order to have a correct dual channel.

Can multiple Virtual Devices use the same IVI Driver Sessions?

I am using Switch Executive 2.0 and I'm having problems creating multiple Virtual Devices.
I have created a virtual device on a development computer that has no hardware connected to it. This virtual device uses specific drivers to simulate the devices. The problem I'm having is that when I create a second virtual device and try to add the same IVI Switches as the first Virtual device, I'm getting the following error:
An error has occurred while attempting to access the device deviceA_ivi.
Error -223116 occurred:
Internal Software error occurred in Switches software. Please contact National Instruments Support.
File name: .\source\mxsWrappers\tMXSObject.cpp
Line Number 192:
Status Code: -223116
Can someone please explain why?

Can you please elaborate on how did you create those simulated devices? Namely, what does your IVI configuration look like? What does the driver session for the logical name look like? What's the software module? What's the hardware module? What is the driver setup string, and what is the simulation mode for the device in question?
-Serge
Srdan Zirojevic

Problem connecting Firewire device and external HD at the same time

Hi. I'm attempting to record digital audio through a Presonus Firepod A/D interface via a Firewire 400 to 800 cable connected to one of the Firewire 800 ports on a mid-2010 Mac Pro running Snow Leopard.
The problem is that if I have an external HD connected to one of the other Firewire 800 ports on the computer and powered on at the same time, the connection to the Presonus Firewire device is not recognized by the Mac Pro. Not only that, performance of the Mac Pro is affected adversely and System Profiler is unable to list any Firewire devices. If I turn the external HD off, the Presonus device is recognized and listed in System Profiler and the machine runs fine. I'm able to connect two external hard drives via separate Firewire 800 ports on the Mac Pro and both drives mount w/ no problem. It's only when I try to connect one of the external HDs and the Presonus audio device at the same time that the problem occurs.
I used this same arrangement on a PowerMac G5 running Tiger w/ no problems whatsoever. If the 400 to 800 cable is bad, I would think it wouldn't work at all, but it does when only the Presonus Firepod is connected and powered on. Any ideas?

Have done more research and apparently this is not an uncommon problem: overloading the Firewire bus when connecting an audio device along with an additional device like an external hard drive. As I understand it now, audio signal is a bandwidth hog and the solution is to get a Firewire PCIe card which will have its own independent Firewire bus and which I'll use exclusively for my audio device.

FireWire devices doesn't mount nor are recognized by OSX

A known issue but with several solucions posted but nothing seems to help me out...
Something is wrong with the FireWire of my Powerbook G4 667 MHz. External harddrives as soundcards as iPods as anything with a FireWire interface won't mount. However, it seems that the devices are getting electricity, Ipods charge for example. But doesn't appear on the desktop. Nor in the System Profiler. Disk Utility doesn't "see" the drives either. I have been trying with reseting the computer, the VRAM and the VPRAM. Also taken out the battery and left the computer alone for a while. No results. And of course, I have been searching the forums and diskussions like crazy but haven't found a solution.
Anyone who can give me some leads about what I can do next? A clue in this mystery is that I used a Pocketdrive to move files in between the Mac and a PC. I worked fine for 10 times or so, but then suddenly the Mac didn't mount it. First I thought that it was just that harddrive that had some problems (from the PC, I might haven't emptied the trashbin the last time I disconnected it from the PC) but then I realized that no FireWire deviced worked any longer.
Thanks in advance

Hi, jorgengun. Try running the Apple Hardware Test CD that came with your Powerbook, and see whether it reports any problem with your FireWire controller or port. It's possible that your port has gone bad, in which case the timing was probably just coincidental — it's unlikely that anything that happened on the PC could have caused your Powerbook's port to be damaged.
If you don't have Apple Hardware Test, a TechTool Pro or TechTool Deluxe CD has similar hardware testing abilities. (TTD was supplied by Apple to the purchasers of AppleCare Extended Protection plans, and is not available otherwise as far as I know. TTP is a commercial product.)
If you don't have any of the above, and all of the devices that no longer work when connected to the port did indeed work in the past, take the Powerbook to the Genius Bar at an Apple Store, or to a local Apple dealership, and have the port tested.
A bad port would necessitate one of two things: a logic board replacement, or the purchase of a CardBus-slot Firewire card.

Quad stopped mounting firewire devices.

After recognizing my new FW800 hard drive, MOTU 828 and iSight camera, yesterday when I booted up my new Quad G5 stopped mounting these devices and a System Profile showed no firewire ports even present. A simple "disconnect all peripherals and zap the PRAM" fixed it.
Today the same thing happened again so I did the rest again, but nothing happened. I then reset the NVRAM as well -- still nothing.
My relationship with Apple has been love-hate for the last 12 years; right now, after dropping major $$ on a new Quad G5 (against my better judgment because we allllll know that the first round of new computers that Apple puts out is always chock-full of lemons) I am in "hate" mode. 6 Apple computers in 12 years, and all 6 (I'm not kidding) were broken right out of the box.
Can anyone recommend something that I might be missing?

Hey ds,
Thanks for the tips. I actually tried those, along with all of the troubleshooting tips that the phone tech support folks gave me. The only thing that has worked is unplugging the power cord from the CPU, then plugging it back in, and zapping the pRAM on startup -- then the firewire devices will mount.
Because tech support couldn't figure out why that's happening, they've declared it a hardware problem and said that I got a lemon... and I'm off to the Apple Store first thing in the morning to drop off my Quad.
6 lemons out of 6 purchased over 12 years.... ouch.

Problem: mounting multiple Firewire devices

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