Firewire issues after Snow Leopard...

3522 tips and notes:
http://www.xlr8yourmac.com/

@g.wiz: i concur with your hypothesis, i'm havin' the same problems... first i thought it was the drive (lacie quadra 500gb), but that didn't seem to problem.... can't be a coincidence that it's also not working on your late 2006 machine.....

Hi, I faced the same problems like the rest of you after I upgraded to SL - Firewire HD not recognized, stalled in the mist of copying files etc.. I am using a WD Passport Studio 2. Tried all the suggestions I can find in this discussion forum and other forums. Finally I am able to use my Firewire HD for whole of today without any problems (touch wood!) mentioned in this discussion. I tried the followings but I can't remember the exact order:
- reformatted the Firewire HD to use GUID partition map scheme
- re-apply the 10.6.1 update
- repair disk permission
- did a Volume Structure check on the Firewire HD with TechTool

I hope the above information helps. Good luck!

Message was edited by: Gee Bee

Same here! After upgrading to SL, my Firewire 800 HD is sporadically recognized, and when it does connect, it will not copy files correctly. I keep getting an error -36 when trying to copy files from the drive.

It worked perfectly prior to the upgrade. I have not had any success with disk repair, re-applying the update or anything.

Has anyone heard from Apple regarding this?

I, too, have had Firewire problems since moving to 10.6. Some optical drives in an enclosure containing the Oxford 934 chip will not mount disks unless I pull the Firewire cable and reinsert it. They work fine using USB 2.0. The problem is a result of Apple's update of the Firewire drivers, specifically

IOFirewireSerialBusPRotocolTransport.kext

Replacing this extension with the one from 10.5 causes everything to work properly. If you do choose to replace this extension, you may wish to replace all five with those from 10.5. Additionally, after making the exchange, repair permissions and restart so as to make sure the replacement extensions are properly recognized.

During permission repair, I received alerts that one or more of these extensions could not be used. I ignored the alert with apparently no adverse occurrences.

After upgrading to Snow Leopard, my Mercury Elite Pro with dual hard drives and an Oxford chip indeed mounts after my machine has fully started up, however I can no longer boot from the drive any longer. Is it possible that even before the Mac Os loads my Mercury Elite hard drive encounters some sort of problem and will not be recognized as a startup disc? I went to an apple store, and the hard drive would not act as a startup disc on a mac laptop. However, I tried the same drive on my own laptop running 10.5.8 and it worked fine! Can anyone offer some advice?

Hi Ken I found my optical drive does work now when the enclosure is powered on and the firewire cable is reseated each time its definitely the drivers saying no to the power on and off.

may I ask how can we get the OSX 10.5 version of IOFirewireSerialBusPRotocolTransport.kext

once we have upgraded to 10.6

I cannot seen to find it online can you zip yours and email it to me?

let me know I will provide an email address if you can

thanks

Hi Nyk0n,

Please find the zipped kext file from my 10.5.8 system on my iDisk: http://idisk.mac.com/amaurymac-Public?view=web.

Amaury

All you need is the backup image you kept before upgrading to Snow Leopard. Or use Pacifist to extract from an installer package.

However, normally there are changes and using an older driver may not load, and usually won't when just manually copied (as above).

Great ideas, wish I could just 'move' this to Install/Using Snow Leopard - we've got people with various systems other than Mac Pro (previous to 2009).

There ought to be a sub-forum for Snow Leopard just for storage / external storage drives and devices.

email addresses should be in your profile and not posted in forums

hey Mac Mini

your iDisk drive is missing the Kext but I got Pacifist (Thanks Hatter)

I am going to try what was mentioned earlier loading the older driver to stop having issues with firewire

I know it worked flawlessly before upgrading not sure where i would find the backup image before the upgrade as there was no option and it freed space upgrading not took space

will try Pacifist and go from there

thanks guys !

hello,

sorry for the delay, but now you can download the kext from my idisk.

which folder should I put the file IOFirewireSerialBusPRotocolTransport.kext ??

copy the file your HD/System/Library/Extensions/

Another thread:
http://discussions.apple.com/thread.jspa?messageID=10270761#10270761

I can confirm now, that procedure above (my prev post) solved my issue. THANKS to Ken Marks!
I used the Pacifist software ( http://www.charlessoft.com/ ) and my Leopard Install disc to replace the
IOFirewireSerialBusPRotocolTransport.kext file.

Instructions for Pacifist:
1.Download and install the sw from the website above.
2.Insert the Leopard (10.5) install disc and open Pacifist
3.Choose the 'Open Apple Install Discs' menu from the sw and let the program running
4.Once the program finished with the reading type OFirewireSerialBusPRotocolTransport.kext to the search field on the top right and hit enter
5.Right click on the file and choose 'install to other disc' and follow the onscreen informations. ( choose own HD and click on the 'install' button
6.Make sure that the ‘Use Administrator privileges’ ticked
7. Always click on overwrite the existing file.
8. Close all running applications on your machine and open DiskUtility and run the repair permissions.

I, too, have had Firewire problems since moving to 10.6. Some optical drives in an enclosure containing the Oxford 934 chip will not mount disks unless I pull the Firewire cable and reinsert it. They work fine using USB 2.0. The problem is a result of Apple's update of the Firewire drivers, specifically

IOFirewireSerialBusPRotocolTransport.kext

Replacing this extension with the one from 10.5 causes everything to work properly. If you do choose to replace this extension, you may wish to replace all five with those from 10.5. Additionally, after making the exchange, repair permissions and restart so as to make sure the replacement extensions are properly recognized. Be sure to repair permissions before restarting or the replacement extension may not be recognized.

During permission repair, I received alerts that one or more of these extensions could not be used. I ignored the alert with apparently no adverse occurrences.

same problem here with my lacie rugged 320 on fw 800 or 400 and my iomega 1tb desktop drive.
tried resetting pram and nothing.