Error -36 when reading/writing with firewire drives (400 & 800)

This is only happening when I connect the drives to my G5, but the drives work fine on my MacBook Pro. I first thought I had a problem with my drives, but then when they worked on my laptop I figured it must be a problem with my G5. One of the drives is a smartdisk firelite drive connected via firewire to the front of my G5, the other is a G-Drive connected via FW 800 in the back of my machine.
Any ideas of what I need to do on my G5 to fix this issue?
Thanks!

Hi-
The error is an I/O error. One possible cause is low power on the firewire bus, or, the drives require more power than is available. Placing a powered hub between the G5 and the drive may be the solution.

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When you put your mac to sleep are you supposed to unmount your external drives(firewire)? is this different for firewire vs. usb?
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There could be a problem with the FW drive's firmware. Older, non-standards-complying versions have been known to do stuff like this, especially with newer Macs that are more stringent in what they tolerate. Check with the manufacturer for updates.

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It just means it is not available.. I think.. apple doesn't exactly give you a guide to errors.
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Even with older OS apple introduced some poor networking decisions at lion which have carried through.
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2. Reset the TC to factory and redo the setup from MBA.
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It's a different method of backing up your iPhone 4s. This article covers the differences between the two and may actually be able to help you choose between them:
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I have an iMac 500 Indigo and am trying to upgrade i to osx as other in this computer lab. I have been provided with a FireWire drive with a bootup of Tiger and a Panther disk image. Out of 32 computers here only three have ceaced to work. They are all the same 384 MB of RAM I have tried to a restore in FW Target Disk mode with no luck I am now trying to copy the files via classic probibly in vain. So back to the error, I see the computer in the UNIX bootup stage for a few (the grey apple with the progress indicator.) and then I get a Panic written directly to the screen over top of the graphic indicator as seen on older versions of OSX (10.0 10.01 or so)
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The firmware update is a good suggestion to check.
Here's another thing. You say you have been "provided with" an external firewire drive with Tiger on it. How was that Tiger OS installed on that firewire drive? If it was done on a computer that is not identical to your iMac, then it very well will not be able to boot your iMac. When you install Tiger or Panther or any version of Mac OS X, what is actually installed is a custom version of OS X that is tailored to the specific model of computer you are running at the time. So if the firewire drive has a Mac OS X that was installed, say from a G5, then that drive MIGHT only be able to properly boot that model of G5. It MIGHT be able to boot a G4 or a G3, but I think the odds are against that.
The reliable way to install OS X is from an OS X CD that is the commercially sold boxed version (not the installation CD that comes with a specific model of Macintosh, and not a firewire drive that has OS X from some other model of Macintosh).

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Joe-
Is the drive partitioned to APM? (Sorry I took Anton's reply to be yours.) What was the type fo partitioning onthe disk with the success? I am not knowledgable enough in those error messages on the system.log file, but one thought is - after the memory upgrade, did you clear the PRAM (long shot, but do it anyway)? The machine booting on one external Firewire drive (#2) implies the problem is with the external FW disk (#1) you are using. Some other people had the bus error, but with Time Machine. (Not to go on a tangent, but TM seems to have problems when the disk name has non-alphanumeric in it.)
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Files in Trash
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Also visit The XLab FAQs and read the FAQ on Data Recovery.
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I read a few posts from the end of last year that stated the Firewire ports of the B & W G3s have problems. The general solution appeared to be the use a dedicated PCI card.
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(2) Copying files is a VERY basic function of an operating system. Shouldn't there be some kind of error generated if a copied file doesn't match the source? (like a checksum error).
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(4) I'd like a better way to compare souce and destination files after a copy. What application can I use to do a low-level comparison of two files?
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John

John,
My reference to RAM was by way of example. Another example of error opportunities is in rebuilding the desktop. I have had files lost because of the desktop changing when the removable media or external hard drive is changed to a computer with a different OS. Rebuilding the desktop restored the files.
The guys that wrote Disk Warrior could give the brutal full on why files appear, disappear and get corrupted. I choose to not trust any one medium so I backup my backups. Sometimes a reliable routine is better than an explaination.
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Error -36 when reading/writing with firewire drives (400 & 800)

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