Can't Mount Firewire 800 Drives

[E-Chris]

I can't get any firewire 800 drives to mount using a firewire PCI-Express card. I've tried several different brands of cards, and they work in Windows, but anytime I connect a drive via the 800 port in OS X it gives an error that the drive isn't initialized. I can erase the drive in Disk Utilities, but I can't mount it. When I try to mount it the log shows:

 

disk5s1: I/O error.

unable to probe /dev/disk5s1 (status code 0xFFFFFFC)

 

The firewire 400 port works fine, but not the 800.

 

Anybody know what might be causing this, and how I might be able to fix it. I'd really like to use the 800 port instead as I'm dealing with a lot of large files and data.

 

 

Thanks in advance.

[E-Chris]

I think it might be due to the AppleSMBIOS-27 rev6 I was using.

 

I reinstalled 10.5.2 on a test partition and the drive mounted fine. I then installed the AppleSMBIOS-27 rev6 kext and the drive would no longer work.

 

I'm giving netkas' version a try, maybe that will work. I really need to use one of the modified AppleSMBIOS's as I am running FCP and Adobe apps.

 

Anybody know why this file would be causing problems with FW800?

[E-Chris]

Update:

 

So netkas' AppleSMBIOS works fine with FireWire 800, both on 10.5.2 & 10.5.4.

 

Not sure why AppleSMBIOS-27 rev6 doesn't work, but at least I'm up and running again.