Powerbook G3 running 8.6 Ethernet to iMac running 10.4

For the past several years, I have been mounting my PB3 hard drive on my iMac by using an Ethernet cable hard wired between the two and addressing the PB3 as a server from the iMac. Up until this past weekend, I was running 10.2.8 on the iMac. I upgraded to Tiger 10.4 and can no longer mount the PB3 hard drive. Not ready to buy a new PB which I use when I travel on business. Help out there?

g@ars,
Unfortunately Tiger/10.4.x no longer supports Apple Filing Protocol over AppleTalk, only TCP/IP, and OS 8.6 does not support file sharing over TCP/IP. I think your only option is to update to 9.x.
http://docs.info.apple.com/article.html?artnum=301183

Similar Messages

Network question iMac running 8.5.1

I have an iMac that runs system 8.5.1 that I am trying to retire for obvious reasons. Trouble is that there is a series of files on the machine that is vital to my business. The machine has a PowerPC G3 processor running @ 266 MHz, ethernet (which is running fine - I'm able to print). I can access the internet with Internet explorer 4.0.1 but can do very little. I cannot log into my mail program in order to mail copies of the file to myself. I cannot network the machine to other machines in my network, even though I have turned appletalk on and tried to find other hard drives in the chooser function. I have tried to burn a CD but the machine will not successfully format a disk. I have tried to back up copies of the files on to a flash drive, but the machine will not recognize the drive (won't pop up on the screen).
Any ideas?

I suggest you format the flash drive to Mac OS standard. Format on your new Mac. See disk utility on your new Mac.
Try getting iCab
http://icab.de/dl.php
you can set up an FTP server & client.
I wasn't able to get apple's share working with Mac OS X 10.4.
Jan Hedlund wrote:
You may want to have a look at what Grant Bennet-Alder writes under this topic.
http://discussions.apple.com/thread.jspa?threadID=1603898&tstart=0
Jan
I was able to upload files by using an FTP server. I used PureFTPd Manager 1.7 with Mac OS X 10.4. this download does include the server software. I did have to create a FTP user. I had to boot the classic machine after configuring.
http://www.apple.com/downloads/macosx/networking_security/pureftpdmanager.html
I used fetch:
http://fetchsoftworks.com/downloads.html
I used version 3. Previously, I used version 4.
You can use any web browser to download from Mac OS X when you turn on Web sharing. This is how I downloaded fetch.
Robert
Message was edited by: rccharles

Windows 7 blue screen on Mid 2010 iMac running 10.8

I had previously had the 64 bit version of Windows 7 Home Premium running on my mid 2010 iMac running 10.7. However, after upgrading to 10.8, my Windows installation would blue screen after booting. I suspect this was due to upgrading to 10.8 as I didn't make any changes to my Windows install because I only use it for gaming.
I've since removed the Windows partition, and tried a clean install via the Boot Camp Assistant. Windows installs just fine and boots cleanly. However, after installing the Apple Boot Camp drivers (freshly downloaded during the Boot Camp Assistant process), Windows blue screens upon booting. I can repair the Windows install using the built in process, but any attempt to install Apple's drivers results in blue screening. I've tried a clean Windows install and redownloading Apple's drivers several times with no luck.
Does anyone else have any suggestions on how to resolve this problem? Thank you for your help!

I do see this. And I suspect Windows updates. Not Apple (though I would be the first to suspect those too).
iMac graphic drivers for Windows seem touchy and common. The April Windows monthly patch updates hit a few iMac users.
One person found that if they only did updates in smaller steps and not all at once they were fine.
Tuesday this week was another Patch Tuesday.
Games, heat, disk blocks, even RAM errors - one person recently we went round and round... bad blocks not heat, new disk drive and they were 100% stable and rock solid but was hard to rule out. Windows though is easier to test RAM and sectors. And Lion was not even aware or sensitive to those bad sectors and read errors OR RAM errors that Memtest clearly showed (run in OS X).
One person had upgraded RAM, low and behold the new DIMMs were just not fully pushed in and seated and making good contacts.
Try to rule out hardware. Maybe you stumbled on bad block being used now. Run chkdsk if nothing else.
And when updating or preparing to, run Registry cleaner in CCleaner first, Go To %TEMP% and remove everything there. Make a system backup image to another disk drive (NTFS) or with WinClone 3 (HFS, $20) or CampTune ($20).
Or it could just be uninstall one driver at a time, start with GPU, look at what was last installed. Windows drivers are not desireable for GPU. Get the one from AMD or Nvidia instead.

How do I transfer an iWeb site from my G4 Powerbook to my iMac running Lion?

How do I transfer an iWeb site from my G4 Powerbook to my iMac running Lion?
I have seen posts saying to copy the Domain file From Home Folder/Library/Application Support/iWeb but this folder does not exist on my new iMac? I have created it myself and added the old domain file but when I double click on ot it just opens a new iWeb site - Any ideas please?
Thanks :-)

See this page under "iWeb and Lion OS X 10.7" for how to open a Domain file....
http://www.iwebformusicians.com/iWeb/iWeb-Tips.html

I'm trying to transfer data (docs, emails) from G4 iMac running os 10.3.9 to brand new iMac on 10.8.1 I'm stuck, any help greatly appreciated. (Ethernet or wifi networking are both options if I can figure out how to get the machines to communicate.)

I'm trying to transfer data (docs, emails) from an old G4 iMac running OS 10.3.9 to brand new iMac on 10.8.1 I'm stuck, any help greatly appreciated. (Ethernet or wifi networking are both options if I can figure out how to get the machines to communicate.)

AMoriyama wrote:
I have the old machine backed up onto an external firewire disk but can't hook that up to the new imac as I'm waiting for delivery of a firewire 400/800 adaptor - therefore starting the old machine up as a slave is also subject to the same delay.
I was hoping there might be some way to create a network between the 2 machines (and 2 different versions of the OS) to be able to transfer data across immediately but perhaps I'll just have to wait for my firewire adaptor to arrive.
I don't understand why you're buying a Firewire adaptor, since AFAIK both of your computers have Firewire already built in.
All you need is a firewire cable. Connect the Firewire socket on the old machine to the Firewire socket on your new iMac.
Then start the old machine in Target Mode (i.e. by holding down the T key on its keyboard, while it's starting up, until you see the three-legged T icon hopping around the screen of the old machine.)
At that point you will also see a new icon on the screen of your new iMac. This is the hard drive of your old machine. By clicking on it you can navigate through it any way you like, just as you would normally.
Just drag across whatever you want from the old computer to the new one. This will leave everything on the old computer untouched.
- or use Migration Assistant but in my experience, Migration Assistant isn't very reliable and fails to migrate large amounts of stuff.

I used migration assistant and my ethernet cable to move data and apps from my 5-yr old Intel-based iMac to my brand new Intel-based iMac running OS Lion. The old machine was running OS 10.5.8. Not all my files transferred (or I can't find them). Help

I used migration assistant and my ethernet cable to move data and apps from my 5-yr old Intel-based iMac to my brand new Intel-based iMac running OS Lion. The old machine was running OS 10.5.8. Not all my files transferred (or I can't find them). I've seen recommendations to select the old computer in System Preferences, but that didn't work. Help. Thanks!

IMO, wrong choice. Start over, using a FireWire cable and following the steps in Pondini's Setup New Mac guide.

How to connect my perfectly-working 20-year-old Apple Personal Laserwriter 320 to my iMac running Mountain Lion?

How to connect my perfectly-working 20-year-old Apple Personal Laserwriter 320 to my iMac running Mountain Lion?
Thank you, Morty S.

I have a perfectly-working LW 4/600 with exactly the same issue. They use localtalk - a long obsolete network connection, that doesn't connect to modern networks, and appletalk as the comm protocol.
I think the only choice you have is to use an old powerPC Mac as print server. You tell me which old Mac you have, with a localtalk connector, or that runs OS X 10.4 or earlier (so it speaks appletalk), and I'll tell you how I've done it for the past 11 years or so.
Right now I use a G4 running 10.4.11, plus an etherMac ethernet to localtalk adapter.
Before, I used a PMac 6100 running LPD server software.

My Macbook Pro OS 10.7.5 will not recognize toshiba hard drive. I will register on an iMac running the same OS. Any ideas?

I have a Toshiba external hard drive that i used with MacBook. I now have a MacBook Pro running OS 10.7.5. It does not register that the Toshiba hard drive is plugged in, yet if I plug it into an iMac running the same OS it does work.

I don't know the answer to your problem, but until you resolve it do not upgrade OS X.
I would suggest you try a reinstall:
Reinstall Lion, Mountain Lion, or Mavericks without erasing drive
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Repair
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported then click on the Repair Permissions button. When the process is completed, then quit DU and return to the main menu.
Reinstall Lion, Mountain Lion, or Mavericks
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
OS X Lion- Reinstall Mac OS X
Note: You will need an active Internet connection. I suggest using Ethernet
if possible because it is three times faster than wireless.

What is the best way to connect a G4 running 9.2.2 or 10 to an new imac running lion?

What is the best way to connect a G4 running 9.2.2 or 10 to an new imac running lion?

It should be possible to network them easily.
Ethernet will be the most straightforward. There is no question that you can plug both Macs into a normal network and they can share files if you turn on File Sharing.
The iMac has a Gigabit Ethernet port, and if the G4 also has Gigabit Ethernet, that will be a very fast connection through a gigabit-capable Ethernet cable or router. Otherwise both can use the slower Ethernet speeds with no problem.
You can also network the two machines via a FireWire 800 or FireWire 400 cable if necessary, and use File Sharing that way too. Finally, you can put one Mac into FireWire Target Disk Mode, which turns it into a hard disk that the other Mac can see, but this is the least flexible since one machine goes out of service, and it's probably no faster than Gigabit Ethernet.

Why are downloads freezing on iMac running 10.7.3?

I have a 2011 iMac running Lion OS X 10.7.3 and downloads are freezing part way through on both Safari and Firefox.

teskridge wrote:
The iMac is ethernet hard wired to my router, which is connected to a cable modem from Time Warner.
Have you emptied your cache? (Under Safari in top Menu?) Are you running any third party addons especially things such as Little Snitch, Speed Download or anti-virus software? Have you repaired permissions using DiskUtility?
Pete

Black and white laser printer for Imac running 8.6 os

Does anyone know of a laser printer for my older Imac running 8.6 os?

jackson hole 88,
The 300-320-360 series was nice and 10 ppm but no ethernet. Jump right to the 600 series, including the 16/600 or the 640. Find a recycler that refurbishes them. You can get printers there for as low as $25. Buy two and have spare parts. Toner is still available for that series at affordable prices.
Jim

HT201364 My imac running OS 10.6.8, and want to install software that needs OS10.7. The latest upgrade Maverick requires a MAC dated 2007 or later. Where is the date... It is NOT in "About this Mac". Older upgrade better? How to proceed?

My imac running OS 10.6.8, and want to install Garmin software that needs OS10.7.
The latest upgrade Maverick requires a MAC dated 2007 or later. Where is the date... It is NOT in "About this Mac".
I feel an older upgrade than Maverick might be better for my machine?
Is it possible to upgrade to ie, 10,7? or another recommended upgrade.
How to proceed?

Upgrading from Snow Leopard to Lion or Mountain Lion
You can upgrade to Mountain Lion from Lion or directly from Snow Leopard. Mountain Lion can be downloaded from the Mac App Store for $19.99.
If you sign into the App Store and try to purchase Mountain Lion but the App Store says your computer is not compatible then you may still be able to upgrade to Lion per the following information.
A. Upgrading to Mountain Lion or Mavericks
To upgrade to Mountain Lion or Mavericks you must have Snow Leopard 10.6.8 or Lion installed. Purchase and download Mountain Lion or Mavericks (Free) from the App Store. Sign in using your Apple ID. Mountain Lion is $19.99 plus tax. The file is quite large, over 5 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
     OS X Mountain Lion — System Requirements
     OS X Mavericks- System Requirements
       Macs that can be upgraded to OS X Mountain Lion
         1. iMac (Mid 2007 or newer) — Model Identifier 7,1 or later
         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) —
             Model Identifier 5,1 or later
         3. MacBook Pro (Mid/Late 2007 or newer) — Model Identifier 3,1 or later
         4. MacBook Air (Late 2008 or newer) — Model Identifier 2,1 or later
         5. Mac mini (Early 2009 or newer) — Model Identifier 3,1 or later
         6. Mac Pro (Early 2008 or newer) — Model Identifier 3,1 or later
         7. Xserve (Early 2009) — Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
Are my applications compatible?
         See App Compatibility Table — RoaringApps.
B. Upgrading to Lion
If your computer does not meet the requirements to install Mountain Lion, it may still meet the requirements to install Lion.
You can purchase Lion by contacting Customer Service: Contacting Apple for support and service - this includes international calling numbers. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
     Lion System Requirements
       1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
           or Xeon processor
       2. 2GB of memory
       3. OS X v10.6.6 or later (v10.6.8 recommended)
       4. 7GB of available space
       5. Some features require an Apple ID; terms apply.

I have an iMac running version OS 10.6.8. I bought the desktop in               2009. Short of buying a new iMac, how can I upgrade to Lion?

I have an iMac running OS 10.6.8. I bought the iMac in 2009. Short of buying a new iMac, is there any other way to upgrade to Lion? Thanks.

I don't believe anything prevents you from upgrading to Lion or Mountain Lion. See:
Upgrading to Lion
If your computer does not meet the requirements to install Mountain Lion, it may still meet the requirements to install Lion.
You can purchase Lion by contacting Customer Service: Contacting Apple for support and service - this includes international calling numbers. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
     Lion System Requirements
       1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
           or Xeon processor
       2. 2GB of memory
       3. OS X v10.6.6 or later (v10.6.8 recommended)
       4. 7GB of available space
       5. Some features require an Apple ID; terms apply.
Upgrading to Mountain Lion
To upgrade to Mountain Lion you must have Snow Leopard 10.6.8 or Lion installed. Purchase and download Mountain Lion from the App Store. Sign in using your Apple ID. Mountain Lion is $19.99 plus tax. The file is quite large, over 4 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
     OS X Mountain Lion - System Requirements
       Macs that can be upgraded to OS X Mountain Lion
         1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later
         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
         3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later
         4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later
         5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later
         6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
         7. Xserve (Early 2009) - Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
     Are my applications compatible?
         See App Compatibility Table - RoaringApps.
     For a complete How-To introduction from Apple see Upgrade to OS X Mountain Lion.

Daily kernel panics on iMac running Mavericks

Frustratingly, I have daily kernel attacks/required rebooting on my 2013 iMac running Mavericks, error message, below.
Please help!
Thank you.
Kernel version:
Darwin Kernel Version 13.4.0: Sun Aug 17 19:50:11 PDT 2014; root:xnu-2422.115.4~1/RELEASE_X86_64
Kernel UUID: 9477416E-7BCA-3679-AF97-E1EAAD3DD5A0
Kernel slide: 0x0000000010800000
Kernel text base: 0xffffff8010a00000
System model name: iMac14,2 (Mac-27ADBB7B4CEE8E61)
System uptime in nanoseconds: 42514275908657
last loaded kext at 243396044683: com.apple.filesystems.msdosfs 1.9 (addr 0xffffff7f930f4000, size 65536)
last unloaded kext at 303576257367: com.apple.filesystems.msdosfs 1.9 (addr 0xffffff7f930f4000, size 57344)
loaded kexts:
com.paceap.kext.pacesupport.snowleopard 5.7.2
com.apple.driver.AppleBluetoothMultitouch 80.14
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.2.7f3
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.filesystems.autofs 3.0
com.apple.iokit.IOBluetoothSerialManager 4.2.7f3
com.apple.driver.AudioAUUC 1.60
com.apple.driver.AppleMikeyHIDDriver 124
com.apple.driver.AppleMikeyDriver 2.6.3f4
com.apple.driver.AGPM 100.14.34
com.apple.driver.ApplePlatformEnabler 2.0.9d7
com.apple.driver.X86PlatformShim 1.0.0
com.apple.driver.AppleHDA 2.6.3f4
com.apple.driver.AppleUpstreamUserClient 3.5.13
com.apple.iokit.IOUserEthernet 1.0.0d1
com.apple.GeForce 8.2.6
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleIntelHD5000Graphics 8.2.8
com.apple.driver.AppleBacklight 170.4.11
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleLPC 1.7.0
com.apple.driver.AppleSMCLMU 2.0.4d1
com.apple.driver.AppleThunderboltIP 1.1.2
com.apple.driver.AppleIntelFramebufferAzul 8.2.8
com.apple.driver.AppleMCCSControl 1.2.5
com.apple.driver.Oxford_Semi 3.4.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeLZVN 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 35
com.apple.driver.AppleUSBHub 683.4.0
com.apple.driver.XsanFilter 404
com.apple.driver.AppleFWOHCI 5.0.2
com.apple.driver.AppleSDXC 1.5.2
com.apple.iokit.AppleBCM5701Ethernet 3.8.1b2
com.apple.iokit.IOAHCIBlockStorage 2.6.0
com.apple.driver.AirPort.Brcm4360 842.21.65
com.apple.driver.AppleAHCIPort 3.0.5
com.apple.driver.AppleUSBXHCI 683.4.0
com.apple.driver.AppleACPIButtons 2.0
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 2.0
com.apple.driver.AppleAPIC 1.7
com.apple.nke.applicationfirewall 153
com.apple.security.quarantine 3
com.apple.driver.AppleBluetoothHIDKeyboard 170.15
com.apple.driver.AppleHIDKeyboard 170.15
com.apple.driver.IOBluetoothHIDDriver 4.2.7f3
com.apple.driver.AppleMultitouchDriver 245.13.1
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.2.7f3
com.apple.driver.AppleUSBMergeNub 650.4.0
com.apple.kext.triggers 1.0
com.apple.iokit.IOSerialFamily 10.0.7
com.apple.iokit.IOUSBHIDDriver 660.4.0
com.apple.driver.AppleUSBAudio 2.9.5f8
com.apple.driver.DspFuncLib 2.6.3f4
com.apple.vecLib.kext 1.0.0
com.apple.iokit.IOAudioFamily 1.9.7fc2
com.apple.kext.OSvKernDSPLib 1.14
com.apple.iokit.IOAcceleratorFamily 98.23
com.apple.nvidia.driver.NVDAGK100Hal 8.2.6
com.apple.nvidia.driver.NVDAResman 8.2.6
com.apple.iokit.IOBluetoothFamily 4.2.7f3
com.apple.iokit.IOFireWireIP 2.2.6
com.apple.iokit.IOSurface 91.1
com.apple.driver.AppleBacklightExpert 1.0.4
com.apple.driver.AppleSMBusPCI 1.0.12d1
com.apple.driver.AppleHDAController 2.6.3f4
com.apple.iokit.IOHDAFamily 2.6.3f4
com.apple.driver.X86PlatformPlugin 1.0.0
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.driver.IOPlatformPluginFamily 5.7.1d6
com.apple.driver.AppleSMC 3.1.8
com.apple.driver.AppleThunderboltEDMSink 2.1.3
com.apple.AppleGraphicsDeviceControl 3.6.22
com.apple.iokit.IOAcceleratorFamily2 98.23
com.apple.driver.AppleSMBusController 1.0.12d1
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.iokit.IOUSBMassStorageClass 3.6.0
com.apple.driver.AppleUSBComposite 656.4.1
com.apple.iokit.IOFireWireSerialBusProtocolTransport 2.5.1
com.apple.driver.AppleThunderboltDPInAdapter 3.1.7
com.apple.driver.AppleThunderboltDPOutAdapter 3.1.7
com.apple.driver.AppleThunderboltDPAdapterFamily 3.1.7
com.apple.driver.AppleThunderboltPCIUpAdapter 1.4.5
com.apple.driver.AppleThunderboltPCIDownAdapter 1.4.5
com.apple.iokit.IOUSBUserClient 660.4.2
com.apple.iokit.IOFireWireSBP2 4.2.6
com.apple.iokit.IOFireWireFamily 4.5.5
com.apple.iokit.IOSCSIBlockCommandsDevice 3.6.7
com.apple.iokit.IOSCSIArchitectureModelFamily 3.6.7
com.apple.driver.AppleThunderboltNHI 2.0.1
com.apple.iokit.IOThunderboltFamily 3.3.1
com.apple.iokit.IOEthernetAVBController 1.0.3b4
com.apple.iokit.IO80211Family 640.36
com.apple.driver.mDNSOffloadUserClient 1.0.1b5
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOAHCIFamily 2.6.5
com.apple.iokit.IOUSBFamily 686.4.1
com.apple.driver.AppleEFINVRAM 2.0
com.apple.driver.AppleEFIRuntime 2.0
com.apple.iokit.IOHIDFamily 2.0.0
com.apple.iokit.IOSMBusFamily 1.1
com.apple.security.sandbox 278.11.1
com.apple.kext.AppleMatch 1.0.0d1
com.apple.security.TMSafetyNet 7
com.apple.driver.AppleKeyStore 2
com.apple.driver.DiskImages 371.1
com.apple.iokit.IOStorageFamily 1.9
com.apple.iokit.IOReportFamily 23
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 2.0
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.corecrypto 1.0
com.apple.kec.pthread 1
Model: iMac14,2, BootROM IM142.0118.B00, 4 processors, Intel Core i7, 3.5 GHz, 28 GB, SMC 2.15f2
Graphics: NVIDIA GeForce GTX 780M, NVIDIA GeForce GTX 780M, PCIe, 4096 MB
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x859B, 0x435438473353313630424D2E4D3136464444
Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x859B, 0x435438473353313630424D2E4D3136464444
Memory Module: BANK 0/DIMM1, 4 GB, DDR3, 1600 MHz, 0x02FE, 0x45424A3430554738454655352D474E4C2D46
Memory Module: BANK 1/DIMM1, 8 GB, DDR3, 1600 MHz, 0x859B, 0x435438473353313630424D2E4D3136464444
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x111), Broadcom BCM43xx 1.0 (6.30.223.154.65)
Bluetooth: Version 4.2.7f3 14616, 3 services, 23 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Network Service: Wi-Fi, AirPort, en1
PCI Card: pci1b21,612, AHCI Controller, Thunderbolt@10,0,0
PCI Card: pci11c1,5901, IEEE 1394 Open HCI, Thunderbolt@195,0,0
Serial ATA Device: APPLE SSD SM1024F, 1 TB
Serial ATA Device: ST3000DM001-1CH166, 3 TB
USB Device: Mercury Elite Pro Quad USB3
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: FaceTime HD Camera (Built-in)
USB Device: SoundSticks
USB Device: USB2.0 Hub
USB Device: Pro9000
USB Device: USB2.0 Hub
USB Device: DYMO LabelWriter 330
USB Device: MiC
FireWire Device: eGo Rugged FW USB2, iomega, Up to 800 Mb/sec
Thunderbolt Bus: iMac, Apple Inc., 23.10
Thunderbolt Device: d2, LaCie, 1, 7.4
Thunderbolt Device: Thunderbolt to FireWire Adapter, Apple Inc., 3, 5.6

Remove half the memory modules and test. Then switch and test the other half.

Have older iMac running OSX 10.6.8 what OSX upgrade should I go to?

Have older iMac running OSX 10.6.8, need to upgrade OS, what version should I upgrade to?

Upgrading to Lion
If your computer does not meet the requirements to install Mavericks, it may still meet the requirements to install Lion.
You can purchase Lion at the Online Apple Store. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
     Lion System Requirements
       1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
           or Xeon processor
       2. 2GB of memory
       3. OS X v10.6.6 or later (v10.6.8 recommended)
       4. 7GB of available space
       5. Some features require an Apple ID; terms apply.
Upgrading to Yosemite
You can upgrade to Yosemite from Lion or directly from Snow Leopard. Yosemite can be downloaded from the Mac App Store for FREE.
Upgrading to Yosemite
To upgrade to Yosemite you must have Snow Leopard 10.6.8 or Lion installed. Download Yosemite from the App Store. Sign in using your Apple ID. Yosemite is free. The file is quite large, over 5 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
    OS X Mavericks/Yosemite - System Requirements
    Macs that can be upgraded to OS X Yosemite
         1. iMac (Mid 2007 or newer) - Model Identifier 7,1 or later
         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later
         3. MacBook Pro (Mid/Late 2007 or newer) - Model Identifier 3,1 or later
         4. MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later
         5. Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later
         6. Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later
         7. Xserve (Early 2009) - Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
     Are my applications compatible?
         See App Compatibility Table - RoaringApps.
You do not have to upgrade to Lion in order to upgrade to Yosemite if your Mac can run Yosemite.

Powerbook G3 running 8.6 Ethernet to iMac running 10.4

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