G5 Fans Run Out-of-Control in Target Disc Mode - Help?

Trying to use a Dual 2GHz PowerPC G5 (OS 10.5.8) with 7GB DDR SDRAM as a target disk. Host is 400Mhz PowerPC G3 (OS 9.2.1) with 320GB RAM.
I'm trying to move ~25GB of data from the G3 to the G5. G5 has roughly 600 GB available space.
G5 goes into TD Mode no problem through SystemPrefs>StartupDisk>TargetDiskMode and restart. Everything was fine while I checked the folder I wanted to move. The fan(s) started to kick on a little bit just before I dragged and dropped it onto the target G5 folder, then as the data started to transfer they all kicked on and started running faster and faster and faster until the G5 sounded like it was going to blow up. Just ridiculous. I stopped the transfer, ejected the G5 disk, and shut the G5 down.
Anyone have an idea what's causing this and how to remedy it?
Thank you.
**Note: After the fact I noticed that (because of a power outage) the transfer folder had a "Created" date of 2011, and a "Modified" date of 1904 (or something like that). I've since corrected the date/time issue on the G3 and modified the folder so it has the correct date. Would this cause the problem?**

Apparently this is normal since the target disk is functioning as an external disk, not a computer, and not under the control of the target disk OS, which normally runs the fans:
https://discussions.apple.com/message/2025856#2025856
It's kind of a default protection mode.
Since the post linked above is from 2006, can anyone confirm this is still cool (unintentional pun)?
Still sounds really bad, by my estimate...
Thanks.

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Fans running out of control

Have had my PowerMac G5 for just over a year. Rebooted yesterday and the fans started running full out and haven't stopped since.
Here are somethings that I have tried:
Reset PRAM
Press Power Manager Button on the logic board
Ran Applejack
Repaired permissions
Unplugged computer
Ran HW test
Deleted Energy Saver Preferences
Playe with Energy Saver Preferences
Run 'top' and confirmed that no processses are running wild
All to no benefit.
I now have a shareware utility installed called "Hardware Monitor" which reports:
CPU A Die Temp is 104 F
CPU B Die Temp is 84 F
Drive Bay: 77 F
Logic Board Inlet: 72
Logic Board Ambient: 74
Logic Board Backside: 84 F
Memory Controler Heatsink: 106 F
Processor Card A Ambient: 86 F
Processor Card B Ambient: 86 F
I have not used this utility before so I don't know whether these readings are in the normal range.
Otherwise the machine is operating normally. But I guess I am sensative to noise as I am unable to think clearly with the rush of the fans.
Anyone have anything further I should try?
I am covered by Apple Care I believe but really need the machine to get work done and don't want to have to take it in for repair if I can help it...
I have to suspect that it is a problem with a sensor at this point or some other hardware problem.

OK so I tried a couple more things outline above:
booted from OSX install CD (fans still racing)
ran Disk Repair from CD
ran Permissions Repair from CD
unplugged all cables except mouse and keyboard
let it 30 minutes unplugged and then reset mother board power button
All with no improvement.
When I pull the clear panel from the side the red light goes on inside the case, when I put it back the red light goes out, so I don't think that particular sensor is broken. The fan speed does not change discernably.
Still wondering if anyone has any temperature data I can compare to mine. There's a 20 F degree difference between my two processors for instance. Anyone else have anything like that?

Stock A64 fan running out of control -- K8N Neo2.

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I understand that I can decrease the speed using a 3rd party program, but this is a new build and I shouldln't need to use a 3rd party program to get normal fan function. I'm trying to establish if this is normal, or if there's a problem with either the fan or motherboard. thanks again.

MacBook Air is laggy and the fan is out of control

My MacBook Air 2013 is laggy and the fan is out of control. The fan is out of control even when I start my macbook up. I don't know if it has something to do with Yosemite or something else. I have tried SMC restarting, and nothing has changed. I would really love to hear if anyone else is having this problem, and I would love to hear if any of you have any tips. Also I checked if anything is using up my CPU a bunch, and nothing is out of the ordinary.

The kernel is using excessive processor cycles. Below are some possible causes for the condition.
Throttling
When it gets high temperature readings from the hardware, or low voltage readings from the battery of a MacBook, the kernel may try to compensate by interrupting the processor(s) to slow them down and reduce power consumption. This condition can be due to:
☞ a buildup of dust on the logic board
☞ high ambient temperature
☞ a worn-out or faulty battery in a portable
☞ the malfunction of a cooling fan, a temperature sensor, a voltage sensor, or some other internal component
Note that if the problem is caused by a sensor, there may be no actual overheating or undervoltage.
If the computer is portable, test with and without the AC adapter connected. If kernel_task hogs the processor only on AC power, charging is causing the machine to heat up. That behavior may be normal for some models. CPU usage should drop when charging is complete.
Apple Diagnostics or the Apple Hardware Test, though not very reliable, is sometimes able to detect a fault. For more thorough hardware testing, make a "Genius" appointment at an Apple Store, or go to another authorized service provider.
If nothing is wrong with the hardware, then whatever you can do to improve cooling may help.
Installed software
User-installed software that includes a device driver or other kernel code may thrash the kernel. That category includes virtualization software, such as Parallels and VMware, as well as most commercial "anti-virus" products. Some system-monitoring applications, such as "iStat," can also contribute to the problem. You can test for this possibility by completely disabling or removing the software according to the developer's instructions, or starting in safe mode. Note, however, that disabling a system modification without removing it or testing in safe mode may not be as easy as you think.
Corrupt NVRAM or SMC data
Sometimes the problem is cleared up by resetting the NVRAM or the SMC.
External display
Connecting an external LCD display to some MacBook Pro models while the lid is open may cause this issue. If applicable, test by closing the lid or disconnecting the display. You might get better results with a newer LED display.

Batteri is dead and the fan is out of control

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.. but without AC the computer work just for some minutes.
If i remove the AC-cable and then check the battery status, it look like this:
Batteri:
Timer för systemvila (minuter): 5
Timer för hårddiskvila (minuter): 10
Timer för bildskärmsvila (minuter): 1
Vakna vid strömförändring: Nej
Vakna när locket öppnas: Ja
Skärmen tonas ned vid vila: Ja
Reducera ljusstyrkan: Ja
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Batteri installerat: Ja
Första varningen om låg nivå: Nej
Full laddning (mAh): 2836
Återstående laddning (mAh): 2769
Ampertal (mA): -14
Volttal (mV): 12430
Cykelantal: 187
What is an Archive & Install?

Can I connect a macbook pro and an ibook g4 via ethernet with ibook in target disc mode?

Well, that's the question, really. I just bought a refurb macbook pro as an upgrade for my sister's elderly ibook - which has been a great computer, but which can't run any system newer than Tiger, and which has an extremely crowded hard drive. We began setting up the new computer last night, and got to where we were instructed to use migration assitant to transfer files from the old machine. This is where things fell apart.
1. Although both machines were on my sister's wireless network, the macbook pro did not see the ibook.
2. When we tried to connect the machines via firewire, we had a new problem - our particular macbook pro does not have a firewire 400 port. Same problem when we thought of connecting my sister's extermal verbatim drive. The macbook pro recognized the drive when we connected via USB, but, after asking if we wanted to use Verbatim for Time Machine, it didn't seem to see it when we answered "Not now".
I have ordered an adapter for our firewire cable, but, in the meantime, I have an ethernet cable at home which I used to transfer data from my older iMac G3 to an eMac. Can I use this cable while putting my sister's ibook into target disc mode, or must I wait for the connector? It is VERY frustrating having such a hard time moving information from one Mac to another. I've been a Mac fan (and evangelist) for years because Macs are generally easy and reliable. But now we're stuck.
I've been reading the boards and understand that target disc mode is the way to go, since we can't use migration assitant to move files between an Intel machine and a PPC. The new macbook pro is running Lion, while the old iBook is running Tiger 10.4.11. Neither of us has any experience with Lion, though we've both used Macs for many years.
TIA!

Thanks, Niel! As it turned out, I had a LaCie rugged drive at my place which had both Firewire 400 and Firewire 800 connections and cables. So I hooked it up to the old iBook, pulled my sister's stuff onto it as instructed in the ppc to intel thread, and then hooked it up to the Macbook Pro. Problem solved! - almost. We did have two issues:
1. My sister has a lot of music - more than 12 gigs were on the iBook's hard drive, but only about 6 made it onto the Macbook Pro. Why is that? I also got a message, when I was trying to move the music folder from the old library onto the new one, that OS X needed this folder and it couldn't be modified. Again, why is that? How, then, do you move files from a PPC to a machine running Lion? Again, a lot of her music files did make it over, but not all of them.
2. All her photos did seem to come over - in duplicate, maybe even in triplicate. That is so annoying! The same thing happened to me when I was migrating between my old eMac G4 and my iMac G5. Why on earth does iPhoto do this, and how can we make it stop?!
But we did manage to get a lot of her stuff onto the new machine. When we get the adapter, she'll be able to add the files that are on the Verbatim drive. You've been very helpful!

Installing tiger on an ibook w/o dvd, but using target disc mode?

so here is the problem. i bought tiger for my ibook (g3 500mhz 312 mb airport cd drive...) so i found out the hard way that i can not install tiger dvd on my ibook (it has a cd drive.) so i was thinking and booted it up in target disc mode on my g4 tower running 10.2.8 the hard drive came up on the g4 and i installed sucessfully tiger on to the ibook! i was really excited that it worked. (i really didn;t want to order the cd set from apple)
so i went to start and download updates and it didn't connect. so i went to configure the airport and had a ton of problems. it just won't! airport will not recgonize any networks, and i have done it all to configure it. the ibook sees the card too!
so i took the card out of the ibook and installe dit in tehg4 tower and bravo it works just fine, so the problem is not the card at all.
i then took the ibiik to firsttech (an apple store) and they booted it up in network mode and the card worked just fine! they think that because i installed tiger fro a computer that was not running an airport network that it did not install that part of the software. this i do not believe becaust all of the airport stuff is there to configure, the problem is it just won't.
so to make things more interesting the screen will freeze. and after that when i reboot the ibook the screen is dead. and it stays dead for a while so this is just a pain. i try to reboot it in target disc mode but the icon does not show up on the host computer. i can run system profiler and the g4 will see the ibook as a firewire device in target disc mode, but i just can't see it on the desktop. i can hear the hard drive running, and i get the chime so i know it is on.
so i know that the problem is probably tiger as i know that there have some problems with it. but i just don't get it. b4 i reinstall 10.2 can anyone give me any help fixing tiger?
THANKS!
SEAN
g4 tower Mac OS X (10.4.8) ibook! g3 too
g4 tower Mac OS X (10.4.8) ibook! g3 too

Hi sean,
first of all: WELCOME TO THE DISCUSSIONS!
You probably did the target-disk install the wrong way round. If you booted the G4 from the install DVD and from there installed Tiger to the G3 iBook you have installed the G4 hardware drivers which are not compatible with the iBook.
You have to do it this way:
Insert the install DVD into the G4. Start the G4 into target disk mode by holding down the t-key during boot. Connect the G4 to the iBook using a firewire cable. Now boot the iBook while holding down the option-key. This will bring you into the boot manager where you can select the install DVD as boot-volume.
Once the installer has started perform an Archive&Install to the iBook hard disk. This should solve your problem.
Remember: Repair permissions before and after an update!
If this answered your question please consider granting some stars: Why reward points?

Using target disc mode to access a broken laptop

I'm using a 1.33 15" PB with 10.3.9
and broken early 12" still on 10.2.8
During an attempted repair of the 12" DC in jack, also replacing the broken CD/DVD Drive with a SD using a replacement lower case and screen that still had the screen control? and dc in jack in it, broke the connection for the screen control on the 12" logic board, Thought I had it effectively soldered back on, but appears not. Screen won't light up, But appears to powering up, get the dong and hard drive spins up.
Was told to connect the two units together with firewire and use the Target disc mode to access the data on the broken machine. (which normally needs to be logged into on start up normally, but can't, not being able see the screen)
With the 12" powered up, I restarted the 15" holding the "T" key down and get a screen that has a Yellow "Y" like icon that moves around the screen, "O" with 3 extensions off it, 1 solid and other 2 dashes.
After a minute or so, shut it down, now sure if it was eventually going to work or should have waited longer. or done something else?, Was expecting the normal desktop to show up with some kind of icon for the other computer, then maybe figure out from there how to transfer the data to the new unit.
Have no idea what to do next or what the problem might be, if I'm doing something wrong, or have to change settings somewhere on the 15" before doing it?
This a used unit, with a fresh 10.3 install and upgraded to 10.3.9 Haven't even gone into the system preferences yet and don't know what most of it's for anyway, (Just did the initial set up) or if the 12" has hardware problems still, etc,
Have a USB external HD adapter and can take the HD out of the 12" instead and see If that'll work? But still not sure if I'm going to encounter something else again that's not easy to figure out in order to get the data off it. Transfer it to the 15" or be able to use it on the external drive
Thanks in advance, And hopefully simple instructions....

Thanks, That eventually worked, Oddly produced an open OS 9 Virtual PC 3 Application folder on the 15" desktop that I installed on the 12" long ago and never used before the external drive icon as I named it for the 12" showed up
Clicking on the external hard drive icon had it open the 15" system folder? Hard drive content window (the os 10.3.9 having a different format than what I'm used to seeing)
All the familiar folders from the 12" were there, but the couple times I tried to open one of them, the external hard drive icon and related entire open desktop window, (Hard drive content) disappeared and produced an error message to properly eject the item, But there nothing there to eject anymore, subsequent attempts to get it back failing, But eventually got it up again.
But can't open the 12" mail application to retrieve my old emails and can't seem to find the file to rebuild the 15" mailbox into what I had in my 12" or save/find those emails, but not sure where to look, must be files somewhere for them.
Every time I click on the mail app in the 12" file, it pops down into application bar and disappears. Tried dragging it into the 15"s icon and that not doing anything either. Also dragging it into the app tool bar and trying to open it and it doing nothing, Presume unable to in the later os.
Will this still happen if I take the HD out? and connect with my USB adapter? Need to boot from this? (have no idea how to do that)
Any suggestions on where to find my old mailbox files? Tried opening a number of odd files in the system folder and found nothing in some of them.
I'm presuming this isn't working because it's still an OS X 10.2.8 application But all the other files appear to still be there and think I found the mail before at one time.
Also got an error in iphoto, Can't open it because it needs to be opened in the later version. But found the 12" iphoto file and dragged it to the desktop and took a bit to transfer, so presume I should move it or specific files in it into the 15" iphoto 15" file to retreive the photo's. (and also moved my camera app to reinstall) Same with my itunes which only had a few cd's in it.
The 12" desktop also took a bit to find, but moved that file to the 15" desk top and those files took a little while to transfer. Some of those are MS Word files so also moved the MS Word app and expect to need to reinstall it before trying to open any of those word doc's.
Still wonder why it produced that os 9 as an open folder which was a virtual pc 3 program I never got around to using,

Installing OS on wiped PowerMac G4 Using Target Disc Mode?

Hi,
My parents recently bought a new iMac, and I decided to wipe their old PowerMac G4 and reinstall an OS (either 9 or 10.2) with the hope of improving functionality. I wiped the PowerMac by booting it in target disc mode and using the disc utility on a Macbook Pro (intel, running 10.4) to erase the PowerMac HD.
The next step got a little tricky for me, however, because the disc drive on the PowerMac is broken. I tried booting the PowerMac in target disc mode, and running the 10.2 installer on the Macbook Pro (with the intent of choosing the PowerMac as the destination), but as I feared, this failed because the Macbook Pro is Intel-based and can't run 10.2.
Then I tried booting the Macbook in target disc mode with an install disc in it and booting the PowerMac while holding down the -option- key. The PowerMac display shows the firewire drive and I select it. Unfortunately, when using the 10.2 disc I end up with the "prohibitory sign," and when using the OS 9 disc, I dead-end at "The system software on the startup disk only functions on the original media, not if copied to another drive."
I would think that this last message would occur when using a copy of the OS disc, but I am using the original, model-specific, OS 9 disc that came with the PowerMac. The OS 10.2 disc I tried was the disc used to upgrade the PowerMac to OS X a few years after the computer was purchased.
Any help you have to give is much appreciated.

You look to have two possibilities: get an external Firewire optical (not completely cheap, it would seem) or just replace the internal drive with one like this one from OWC. Right now, they are selling a unit from LG, as opposed to the Samsung unit I bought from them a couple of months ago and dropped into my venerable B&W G3.
There are probably comparable drives out there from other sources, but that would probably be the best solution if you plan to continue using the G4 for any appreciable amount of time.

PB will only start in target disc mode, please help

On normal start up, I get the "You need to restart your computer......" message with start symbol behind the writing. every time I try to restart the same thing happens. I've tried all the keys on start up tricks and the only ones that work are option/startup where I can choose Hard Drive, OS Disc, or Hardware tools. If I choose Hard Drive, it goes back to the kernal panic screen with "you need to .....". If I choose OS Disc, it goes to a light gray screen with the apple symbol in the middle and just stays there (also does this if I try to startup holding C with startup disc). If I choose Hardware Tools, it lets me test the hard drive and everything checks out fine but when I restart back to the "You need to restart.....". It will also startup in target disc mode hooked up to my iMac. All of my apps and files were there so I transfered everything, whew! I can then insert the startup disc into the PB and it comes up on my iMac in target disc mode. I then try to open and reinstall OS 10.4 but it tells me I have to restart to start the process and I can't do this in target disc mode. I just ant to be able to erase everything on my PB and reinstall OS 10.4 with the PB start discs. Is this possible? thanks....
J.R.

Seems to me you have made all the right conclusions yourself: your HDD checks out fine, you were able to retrieve all your other files in Target mode, so it must be some corrupt OS files.
You just need to startup from your 10.4 install CD#1. To do this, just put the cd ready in its slot, push the power button while pushing the C key at the same time, and gently push in the CD whenever the system is ready (hold the C key while doing this and for as long as needed to hear the PB starting up from CD). If this works, you'll be duly prompted for the rest of the install process.
Before restoring your backup, it may be a good idea to restart in target mode and recheck the hard drive in Disc Utility or preferably Techtool (run a surface analysis to make sure the disc has no bad blocks). If you find any bad blocks, discard the harddisc: it will have caused your OS to be corrupt, and is not to be trusted anymore.
Good luck!

Using thunderbolt to firewire adapter for target disc mode

I need to transfer several GB of data from a 2011 iMac running OS 10.6 to a new Mac Mini running OS 10.9. Can I connect the older iMac to the newer Mini with a Thunderbolt to Firewire adapter and boot the iMac into Target Disc Mode and transfer the data to the new Mac Mini? I've used TDM with two Firewire machines, but not with a newer Thunderbolt to Firewire Machine using an adapter.
Thanks for any input.
--SL

Hi Salnews,
I've done quite a bit of research on this, as this is what I plan to do (only from a MBP on 10.9, but I don't think your situation would be any different) and everything I've read says the answer is yes.
EDIT: I see you're on 10.6.7. You should update to 10.6.8 first.

Core i3 mac not seeing power pc g4 imac in target disc mode

I'm trying to migrate my set up from a power pc g4 imac running a 10.4.11 to a core i3 imac. All the system software and firmware on the g4 imac is upto date and the mac will enter target disc mode. The macs are connected using a brand new 6 pin to 9 pin firewire cable. The iMac core i3 will not see the other mac in target disc mode. When trying the same thing using the migration assistant, migration assistant just hangs with the 'waiting for your other mac to restart'.
I'd really appreciate any help to fix the issue.

Is this the newest model with Thunderbolt? If so then see Thunderbolt 10.6 Help: Transferring files between two computers using Target Disk Mode and Intel-based Mac may become unresponsive in target disk mode.
Have you checked to be sure the drive in the G4 is configured as the Master? If it isn't, then it cannot be seen in TDM.

Target Disc Mode doesn't Work - what do I do?

So my old Apple (2004 G4 Powerbook) went out on me. It will start it up but it won't advance past the start up screen. So I bought a new Apple. I have followed the instructions on how to transfer data from the old one to the new one using the Target Disc Mode, and the Migration Assistant. I can start my old one up in Target Disc Mode (the FireWire icon shows up on the screen). However, my new computer won't recognize it. In the migration mode, all it says is "searching for disc". It doesn't show up on my desktop either (my understanding that it should when in that mode). Any ideas of what I can do? I really want to be able to transfer that data over...Thanks in advance!

Hi and Welcome to Apple Discussions ...
Sounds like the drive in the PBookG4 has failed but I never say die. If by chance you use Airport and have a wireless network set up, you might be able to access the PBook drive with the new Mac. On the new Mac, make sure Airport is turned on. Open a Finder window, select Network in the Sidebar on the left and then click Network.
On the PBookG4. You say it starts up but not past the start up screen. Have you tried using the restore disk that came with the PBook and using Disk Utility to possibly repair the drive? If not, and you have the restore disk, post back and I'll give you the instructions to do this.
Carolyn
Message was edited by: Carolyn Samit

Firewire Target Disc Mode

When connecting two eMacs (eMac "A" & eMac "B") together via Firewire I am able to mount eMac "A" on the desktop of eMac "B". But, when I open the mounted eMac "A" hard drive, I see the items that are on eMac "B". It is like I am opening eMac "B". I tried restarting both machines, changing the names of the computers, and tried reversing which eMac I would try to connect to, all of which did not allow me to view the items on the mounted machine.
Anyone have a similar problem or advice on what to try?

Robert,
Try this, first boot up the eMac you wish to put into Firewire Target Disc Mode normally(that is, let it boot into OS X). Right click(control-click) the Hard Drive icon on the desktop and give it a color. Do this for a couple of folders inside the HD also(reason is, it helps distinguish the two drives).
Now, reboot that mac and hold down the T key(do not have the macs connected). Once booted into Firewire Target Disk Mode, connect it to the other eMac(it should already be on). Does the drive mount on the desktop? Does it have the color you gave it? Do the folders inside it have their colors?
Grant

Firewire Target Disc mode failure

Does anyone know why my 400Mhz Ti Powerbook refuses to boot into target firewire mode? - It just shuts itself down...
I am trying to exchange my old files from the G4 Ti Powerbook (running 10.3 to my iMac (iSight) G5 2.1Ghz running 10.4.3.
I thought 'easy' - connect via firewire, start the powerbook up in Target Disc Mode.. so I restart - holding T down - it starts to start up then you just hear it all shut down after about 5-10 seconds.

Hi, Nick. You can't put a Powerbook into Target Disk Mode by connecting to another computer while it's running and then using the Restart command. It has to be in a cold shutdown when you make the connection.
This article describes the whole procedure and tells which Mac models it can be used with.

G5 Fans Run Out-of-Control in Target Disc Mode - Help?

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