Cannot expand 2007 iMac to 4GB - freezes

Hi all. I have a 24-inch Mid 2007 iMac model iMac7,1 with a 2.4 GHz Intel Core 2 Duo processor and 2 GB of memory. I purchased a pair of PNY 2 GB DDR2 PC2-5300 SODIMM memory modules. When I replace the two 1GB modules with the two 2 GB modules, the iMac will not boot at all. But any combination of the 1 GB and 2 GB modules except the two 2s, in any order, will boot. So I can get 1, 2, or 3 GB but no more. Given that it will boot with either 2 GB module, it appears the modules themselves are fine. Apple's specs say this model supports 4 GB. Any ideas on what the problem is here or how I can fix it?

Hi Russ,
The problem is the PNY RAM, our Macs actually will take 6 GB of good RAM...
Hardware Overview:
Model Name: iMac
Model Identifier: iMac7,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 4 MB
Memory: 6 GB
Bus Speed: 800 MHz
Boot ROM Version: IM71.007A.B03
SMC Version (system): 1.21f4
http://eshop.macsales.com/shop/apple/memory/iMac/Intel_Core_2_Duo
PNY problems...
https://discussions.apple.com/message/19559637#19559637
https://discussions.apple.com/message/19550892#19550892
https://discussions.apple.com/message/19365678#19365678

Similar Messages

How well does OSX Yosemite run on a Mid 2007 iMac?

I own a Mid 2007 iMac with 4GB 667Mhz DDR2 RAM, Intel Core 2 Duo 2.0Ghz processor and has ATI Radeon HD 2400 XT 128 MB graphics. I was considering upgrading from OSX Mavericks 10.9.4 to OSX Yosemite, but fear it may slow the Mac down. If anybody has upgraded their Mid 2007 iMac, does it slow the system down? Thank You.

Hi JRos23. Thanks for sharing your experience.
I also have a mid 2007 iMac (2.4 GHz Intel Core 2 Duo) and I'm waiting on reviews like yours to evaluate if it is worth to take the leap and update. Last year I updated to Mavericks from Lion (skipped Mountain Lion) and it improved a lot on many fronts. However, it only felt smooth when I updated the RAM to 6GB. Apple specs tells us that this machine supports max 4Gb, though I found many people saying that it would support 1x2GB + 1x4Gb, and it does. I trully recommend it. If it helps anyone, I bought these: link (sorry, Spanish Amazon store).
However, seeing that you're having a good enough experience until now I will definitely consider it as near future project, maybe with 10.10.1. Is it really an improvement or are there any daily usage setbacks?
Cheers,
JP

2007 iMac freezes up, rainbow wheel appears when this happens. I know the computer is starting to get old but I can't afford a new one at this time and would love to continue using my Mac, but it's frustrating. Would a fresh install or OS upgrade resolve?

My circa 2007 iMac freezes up, and rainbow wheel appears when this happens. I know the computer is starting to get old but I can't afford a new one at this time and would love to continue using my Mac, but it's frustrating. Most of the time I ONLY have 1 thing open at a time, and keep my tabs down to a minimum. I bought this to do film editing on but with it acting like this I cannot do that. I know I need a ram upgrade (currently running 2 gb) and my OS is old, 10.5.8, but I think even with it being a bit outdated it should run better than this. Would a fresh install or OS upgrade resolve this? Or any other suggestions to keep this clunker chugging along for a little while longer?

How full is the hard drive?
Do you run any virus software or hard drive "cleaner" software like MacKeeper?
If your model is from 2007 you can install up to 6 GBs of RAM.
2 GBs is the barest of minimum RAM for OS X to run on.
Especially if doing video work. You simply do not have sufficient RAM.
Also OS X 10.5.8 Leopard support ended around 2009.
You could update to OS X 10.6 Snow Leopard, at least.
It is available on disc from the Apple store for U.S. $19.99.
I Would seriously upgrade your iMac's RAM to the max. 6 GBs before doing this.
Reliable Mac RAM can be purchase from online Mac RAM source Crucial memory or OWC ( also known as macsales).

Mid 2007 iMac SSD in optical bay - cannot write to last block of device

Hi All,
I've just replaced my optical drive in my 20" mid 2007 iMac (Dual core, 2.4 Ghz, 2 Gb RAM running Mavericks) with a solid state drive (Crucial MX100). The plan is to transfer my boot disk to this drive while keeping my 1 Tb HDD for media and such.
I followed the ifixit guide and it all went smoothly, however when I try to partition or erase the new SSD using Disk Utility, it tells me "Operation failed - cannot write to last block of the device". After googling, I found some answers here that suggested the optical bay cable may be faulty, so I bought a replacement and swapped it in, but no such luck, same problem. I also saw some threads suggesting that the boot disk should be in the original hard drive spot, but since this isn't the boot disk (yet) this shouldn't be the issue.
My computer recognizes the new SSD but won't allow me to partition it. Any suggestions on how to proceed?
Thanks!

ds store wrote:
3. The new disk is just bad.
OK. If that's the case, I'll just get another disk.
Lots of problems with that hybrid drives on Mac's on these forums, get another one that's 7,200 RPM and from Western Digital, not Seagate.
With a 7,200 RPM you get more performance across the entire drive, not just what's cached in the small flash portion of the hybrid.
https://discussions.apple.com/community/notebooks/macbook_pro?view=documents#/
1. Hybrid drives: I'm on number 8 in 6 different machines, no problems at all, what happens when you try?
2. The OP is not using a Hybrid.
3. Lot's of problems with WD drives not booting on these forums though.

Mid 2007 iMac 2.4GHZ. after start up the iMac will slow down to a freeze. Specially while on internet (youtube).

mid 2007 iMac 2.4GHZ. after start up the iMac will slow down to a freeze. Specially while on internet (youtube).

See:
Mac Maintenance Quick Assist,
Mac OS X speed FAQ,
Speeding up Macs,
How to Speed up Macs,
Macintosh OS X Routine Maintenance,
Mac troubleshooting: What to do when your computer is too slow,
Essential Mac Maintenance: Get set up,
Essential Mac Maintenance: Rev up your routines,
Maintaining OS X,
Five Mac maintenance myths and
Myths of required versus not required maintenance for Mac OS X for information.

Problems with Installing 4GB RAM on mid 2007 iMac

I ordered 2 X 2GB sticks of PC2-5300 DDR2 SODIMM RAM for my Boss's mid 2007 iMac from Crucial.com. Well they arrived a few days later and today I have been trying to install them for a few hours now without any luck. I have installed new RAM about 5-6 times without any problems before on different MacBooks and iMacs. After this install I plugged back into the wall and hit the power button, the iMac made a little noise (internal noise) then nothing, just a blank screen. I thought maybe the RAM was bad so I inserted 2 other chips (we ordered 4 X 2GB to upgrade 2 iMacs) and still no luck. After making sure the iMac would boot with the old RAM (which it did), I tried installing 1 X 1GB with 1 X 2GB and it booted up perfectly. I did this with all four 2 GB RAM chips to make sure they all worked and they did. Each time I successfully booted, I went to the system profiler to make sure it recognized 3GB of RAM and it did. So my question is why is this mid 2007 Aluminum iMac not working with 4GB of RAM, but it works perfectly with 3GB? Thanks in advance, sorry for the long question.

+It seems to me that it is not just a problem with the RAM but with the imacs themselves.+
How does this make any sense when one considers that Apple successfully specified, produced, sold and delivered all three iMac (mid 2007) models with an optional 4GB of RAM pre-installed?
In addition, Apple has, without issue, sold large quantities of that same RAM online and over-the-counter for customer upgrades. Much of all that 2GB, and the latest 4GB RAM, as usual, has been manufactured by Micron, the publicly owned U.S. manufacturing company parent of the Crucial direct sales division. The same type of RAM was also being provided to Apple by other manufacturers.
I received my two orders of upgrade RAM from Micron/Crucial even before I had purchased my 24-inch iMac, and it's worked great ever since I installed it. I also installed the second half of that order into my current MacBook, purchased a month after the iMac, and it's also been working great ever since. These are certainly superior Apple products.
Obviously there has been a change in RAM manufacturing design at Micron, probably due to their change-over to the costly, challenging high-tech 50nm and 40nm manufacturing technologies, and it is nothing more than Micron's problem.
Message was edited by: myhighway

I have a mid 2007 IMac, 2.4Ghz intel core 2 Duo with 2 GB 667 MHz DDR2 SDRAM can I upgrade to 4GB

I have a mid 2007 IMac, 2.4Ghz intel core 2 Duo with 2 GB 667 MHz DDR2 SDRAM can I upgrade to 4GB?

Maximum Memory
6.0 GB (Actual) 4.0 GB (Apple)
Memory Slots
2 - 200-pin PC2-5300 (667MHz) DDR2 SO-DIMM

My 2007 iMac 24" now retired as working machine but serves as entertainment center for granddaughters and me, 'attacked' while on Youtube and cannot start up. In need of first aid to get it going again...

My 2007 iMac 24" attacked' while on Youtube and cannot start up. I need first aid to get it going again...
True, it's retired as working machine but serves as family entertainment center.

At this point you have 2 choices.
Erase the disk entirely and reinstall (you will lose everything that is not backed up)
Take it to an Apple Store (you will probably lose everything that is not backed up)
I believe this is a hardware (HDD) issue and would expect a Store trip to be the best approach, sorry.
BUT
Did you try a safe mode start?

I have a 2007 iMac with version 10.6.8. When downloading "some" files to my computer, these files become "zip files." When I open the zip file, it produces a document in some coding language. How can I open the file to produce a legible document?

I have a 2007 iMac with version 10.6.8 and 4GB of expanded memory. When downloading "some" emailed documents, the downloaded file becomes a "zip file," which when opened looks like a coded message. How can I open the "zip file" so that it produces a legible document? Please, help!! thank you!!!

A "zip file" is a compressed file. "Zipping" in principle does not and cannot change the contents. So that if the contents before zipping are garbage, or unreadable on a Mac, when you expand the file you will get garbage or an unreadable file.
The first thing to verify therefore is whether the file, before it was zipped, was in a "Mac friendly" format. Can you do that?
You do not need an App to zip or unzip. These functions are built in on our Macs.
And yes, zipping and unzipping using the built in functionality, work fine in OS 10.6.8. And 10.7 and 10.8 and 10.9.

How can I transfer files from my 2007 iMac to my new MacBook Pro?

How can I transfer files from my 2007 iMac to my new MacBook Pro? It cannot be does over wi-fi as my old computer is too old. Please advise!

Use a Thunderbolt to Ethernet or FireWire adapter.
(95019)

Cannot expand public folders in Outlook but can in OWA

Hi All,
I have a problem which I hope some one might be able to shed some light on. Firstly, the environment is Exchange 2010 (v 14.01.0438.000) and all clients use Outlook 2007. We have one user in the organisation who recently noticed that he cannot expand public
folders. He had been able to do so a couple of months back but could not pin point the time it stopped working. The error received reads :-
"Cannot expand the folder. The set of folders cannot be opened. The attempt to log on to Microsoft Exchange has failed."
I thought that this might be a permissions issue but this particular user can access the public folders via OWA. Also, my AD account was a copy of this user's and I can access public folders without issue.
I have tried the following so far :-
Tried running Outlook in safe mode
Tried recreating the Outlook profile.
Tried creating a new Outlook profile on a different client PC.
Tried running Outlook in cached an online modes.
Ran Exchange BPA and found no issues.
Checked ADSIedit for old administrative groups left over from past migrations.
used the test-outlook connectivity cmdlet from powershell which ran it's tests successfully.
This user originally set up all the public folders and was still listed as the owner of all of them.
Tried creating a new public folder.
Checked for an Outlook update that had caused a similar issue.
All the above failed to progress the situation. I have come across posts online that sound very similar, one stated that a Microsoft tech had found a permission that wasn't correct but didn't list which permission and the other related to an update to Outlook
that had triggered it. I can confirm it's not the update and I have checked permissions in the public folder management utility in Exchange. Also, my AD account is a copy of his and I can access the folders without issue.
I have also considered what may have changed on the network recently. The only major change has been a new admin password but I cannot see how that would be relevant.
Any help would be hugely appreciated!
Thanks in advance!

Hello John: We are having the exact same issue. Thank you for the great description, it hits the nail on the head for an issue that is tough to explain. Did rebuilding the mailbox fix the problem? We thought a next step would be to create a new
AD profile for the user all together, although replacing the user herself would be easier for us. She obviously caused this problem and will most likely cause us more problems that might be worse if she keeps clicking and sliding on every thing that
is shiny to see what it does..
I can only surmise that CaRa ChEn has decided to "better understand customer views on social support experience" elsewhere. I think the only logic for the mailbox suggestion would be "grasping for straws" and it is the only thing you have not tried
so far. (Other than replacing the user). Pactera employees get points for being the first to reply to a question and the first to have a suggestion marked as helpful as well as the sheer quantity of replies to the forums that are made. High
value is placed on moving posts to different forums as well so I thought I would ask quick before the thread gets shoveled somewhere else.. If she needs help with the interview project she can find plenty of my thoughts here in the community.
Thanks again, and we will reply back if replacing the user (account) does NOT solve the problem, otherwise one can assume we are happy campers again our new employee and remember just because it is blinking does not mean you should click on it. :)
Best regards,
RickkEE

My mid 2007 iMac doesn't recognise 2GB RAM module in DIMM/1

I am trying to upgrade the RAM in my mid 2007 iMac from 1GB to 4GB. It originally had a 1GB module in slot DIMM/0 and nothing in slot DIMM/1. I inserted the two new 2GB modules, one in each slot but DIMM/1 just reports as being 'empty'. I have tried swapping the modules and different configurations of 1 & 2GB modules but DIMM/1 only reads the original 1GB module (from DIMM/0) and reports 'empty' when either of the two 2GB modules are installed.
I have reset PRAM, checked EFI firmware update and updated OSX to version 10.6.8 (from 10.5.8) but still the same result. The best I can get is 3GB (2GB in DIMM/0 and 1GB in DIMM/1). I am definitely pushing the modules firmly into place. Is there anything else I can try?

Your machine will accept up to 6GB of RAM however you must a) have the correct specifications, no variations at all and b) must push hard with both thumbs to fully seat the RAM. The correct RAM for your system would be the specifications shown here. I suspect 1 of three things with the RAM you bought.
1. Wrong specifications!
2. Incorrectly installed
3. Defective RAM
I would STRONGLY recommend using Crucial or my preferences OWC, which is the memory shown in the link.
BTW I have a late 2007 24" 2.8GHz iMac with 6GB of RAM.

Acquired a 2007 Imac 5,1 - need help

I have been given a 2007 Imac after my old work office closed down. I am a Newbie to macs so am a bit lost.
Its an Imac 5,1
Intel Core 2 Duo processor
2.16GHz
Memory 1GB
Operating OS X 10.4.11
I dont think it runs as fast as it should. Probably has alot of old files on it as it was the artists computer.
I'd like to make it work as well as possible and get all the latest software etc.
Please can someone kindly advise where I should start? Bear in mind i'm a novice!!
It has photoshop and AI which I'd like to keep if possible.

Linzer wrote:
Ok I agree I will wipe it clean.
I have the original disks but I think I should upgrade to the newer OS anyway. Can i get Lion or is Snow leopard my only option?
Do I have to do anything to wipe it or will that happen when I install the new OS?
I have the disks for photoshop and AI so I can just put these back on with the new OS right?
How do I get more RAM? I am a bit of a novice regarding this - it says it has 1GB memory on the "about this computer" menu, but then says it has 198GB free disk space in another menu??
Thanks
You can upgrade to Lion as long as the system meets the system requirements which are:
Mac OS X Lion System Requirements
In order to install Mac OS X 10.7 you will need:
Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor
2GB of RAM (4GB recommended)
Mac OS X 10.6.6 or later with the Mac App Store installed (10.6.8 recommended)
At least 4GB of additional disk space to accommodate the download, but more is obviously recommended
Note that it says 10.6.6 (SL) as a requirement so if you want to get to Lion then yes you must first upgrade to SL. Also note that old PPC (Power PC) based applications will not run on Lion. They must be replaced or upgraded first. The types of apps that will run are Intel & Universal. You can easily tell what your applications are by running System Profiler (Applications - Utilities - System Profiler) or click Spotlight (the little magnifying glass in the upper right) and type System Profiler. Once in SP then click Applications on the left and look at the Kind column, it will list all the apps and state Intel, Universal or PPC.
Upgrading RAM is incredibly easy, to find the correct RAM and how much can be installed in your iMac contact www.macsales.com (OWC) or Crucial. I prefer OWC because they specialize in Macs, have terrific service including how-to videos on how to install the RAM and excellent prices. Crucial is great too however if I gave OWC an A+ I could only rank Crucial as an A, still excellent just not quite as excellent.

Why is my mid 2007 iMac so slow now that I've loaded 10.9.4

Why is my mid 2007 iMac so slow now that I've loaded 10.9.4? Everything seems to be slow. It was quick enough on 10.4. I now have wireless connection issues, and wired keyboard connection issues?
2.4 GHz Intel Core2 Duo, 4GB 667 Mhz DDR2 SDRAM

Hi there - thanks. No, I haven't run anything like Clean My Mac - what would you suggest?
EtreCheck version: 1.9.15 (52)
Report generated September 9, 2014 at 8:56:44 PM PDT
Hardware Information: ?
iMac (24-inch Mid 2007) (Verified)
iMac - model: iMac7,1
1 2.4 GHz Intel Core 2 Duo CPU: 2 cores
4 GB RAM
Video Information: ?
ATI,RadeonHD2600 - VRAM: 256 MB
iMac 1920 x 1200
System Software: ?
OS X 10.9.4 (13E28) - Uptime: 14 days 9:40:19
Disk Information: ?
SAMSUNG HD103UJ disk0 : (1 TB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted>: 209.7 MB
Macintosh HD (disk0s2) / [Startup]: 999.35 GB (321.09 GB free)
Recovery HD (disk0s3) <not mounted>: 650 MB
USB Information: ?
Apple, Inc. Keyboard Hub
Apple Inc. Apple Keyboard
Seagate FA GoFlex Desk 1.5 TB
S.M.A.R.T. Status: Verified
disk1s1 (disk1s1) <not mounted>: 32 KB
FreeAgent GoFlex Drive (disk1s3) /Volumes/FreeAgent GoFlex Drive: 1.5 TB (20.68 GB free)
Apple Inc. Built-in iSight
Apple Inc. Bluetooth USB Host Controller
Apple Computer, Inc. IR Receiver
Gatekeeper: ?
Mac App Store and identified developers
Kernel Extensions: ?
[loaded] com.seagate.driver.PowSecDriverCore (5.1.1) Support
[not loaded] com.seagate.driver.PowSecLeafDriver_10_4 (5.1.1) Support
[loaded] com.seagate.driver.PowSecLeafDriver_10_5 (5.1.1) Support
[not loaded] com.seagate.driver.SeagateDriveIcons (5.1.1) Support
[not loaded] net.pocketmac.driver.BlackberryUSB (3.0.9) Support
[not loaded] net.pocketmac.driver.BlackberryUSBDev (3.0.9) Support
Startup Items: ?
AdobeVersionCueCS2: Path: /Library/StartupItems/AdobeVersionCueCS2
Problem System Launch Daemons: ?
[failed] com.apple.printtool.daemon.plist
[failed] com.apple.wdhelper.plist
Launch Daemons: ?
[loaded] com.adobe.fpsaud.plist Support
[loaded] com.adobe.SwitchBoard.plist Support
[loaded] com.google.keystone.daemon.plist Support
[loaded] com.microsoft.office.licensing.helper.plist Support
Launch Agents: ?
[not loaded] com.adobe.AAM.Updater-1.0.plist Support
[running] com.adobe.AdobeCreativeCloud.plist Support
[running] com.brother.LOGINserver.plist Support
[loaded] com.google.keystone.agent.plist Support
[running] com.seagate.SeagateStorageGauge.plist Support
User Launch Agents: ?
[loaded] com.adobe.AAM.Updater-1.0.plist Support
[loaded] com.adobe.ARM.[...].plist Support
[loaded] com.facebook.videochat.[redacted].plist Support
[running] com.memeo.Memeod.plist Support
User Login Items: ?
Microsoft AU Daemon
SpeechSynthesisServer
iTunesHelper
AdobeResourceSynchronizer
Google Drive
Dropbox
Microsoft Database Daemon
Microsoft Outlook
ExpanderDaemon
VersionCueCS2Status
Internet Plug-ins: ?
o1dbrowserplugin: Version: 5.4.2.18903 Support
Google Earth Web Plug-in: Version: 7.1 Support
Default Browser: Version: 537 - SDK 10.9
Flip4Mac WMV Plugin: Version: 2.3.8.1 Support
OVSHelper: Version: 1.0 Support
RealPlayer Plugin: Version: (null) Support
AdobeAAMDetect: Version: AdobeAAMDetect 2.0.0.0 - SDK 10.7 Support
FlashPlayer-10.6: Version: 15.0.0.152 - SDK 10.6 Support
AdobePDFViewerNPAPI: Version: 10.1.6 Support
DivXBrowserPlugin: Version: 2.1 Support
Flash Player: Version: 15.0.0.152 - SDK 10.6 Support
iPhotoPhotocast: Version: 7.0
googletalkbrowserplugin: Version: 5.4.2.18903 Support
QuickTime Plugin: Version: 7.7.3
AdobePDFViewer: Version: 10.1.6 Support
SharePointBrowserPlugin: Version: 14.1.0 Support
Silverlight: Version: 5.1.20125.0 - SDK 10.6 Support
JavaAppletPlugin: Version: 14.9.0 - SDK 10.7 Check version
Safari Extensions: ?
wpa
html5video
Audio Plug-ins: ?
BluetoothAudioPlugIn: Version: 1.0 - SDK 10.9
AirPlay: Version: 2.0 - SDK 10.9
AppleAVBAudio: Version: 203.2 - SDK 10.9
iSightAudio: Version: 7.7.3 - SDK 10.9
iTunes Plug-ins: ?
Quartz Composer Visualizer: Version: 1.4 - SDK 10.9
User iTunes Plug-ins ?
TuneUp Visualizer: Version: (null) Support
User Internet Plug-ins ?
Move-Media-Player: Version: npmnqmp 071303000006 Support
fbplugin_1_0_3: Version: (null) Support
WebEx: Version: 1.0 Support
WebEx64: Version: 1.0 Support
3rd Party Preference Panes: ?
Adobe Version Cue CS2 Support
DivX Support
Flash Player Support
Flip4Mac WMV Support
Time Machine: ?
Skip System Files: NO
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 930.71 GB Disk used: 631.68 GB
Destinations:
FreeAgent GoFlex Drive [Local] (Last used)
Total size: 1 TB
Total number of backups: 100
Oldest backup: 2013-08-22 07:36:47 +0000
Last backup: 2014-09-10 03:01:26 +0000
Size of backup disk: Too small
Backup size 1 TB < (Disk used 631.68 GB X 3)
Time Machine details may not be accurate.
All volumes being backed up may not be listed.
Top Processes by CPU: ?
      76% Microsoft Outlook
      7% ARM
      4% Google Drive
      1% launchservicesd
      1% Microsoft Database Daemon
Top Processes by Memory: ?
172 MB Finder
135 MB Microsoft Outlook
94 MB Google Chrome
94 MB com.apple.IconServicesAgent
94 MB WindowServer
Virtual Memory Information: ?
158 MB Free RAM
866 MB Active RAM
706 MB Inactive RAM
655 MB Wired RAM
93.45 GB Page-ins
3.83 GB Page-outs

I have a 24-inch Mid 2007 iMac. Should I upgrade to Yosemite?

I have a 24-inch Mid 2007 iMac. Should I upgrade to Yosemite? I was advised by genius bar that it would slow down my iMac.

According to sources such as http://mactracker.ca download database specs for
the iMac (24-inch Mid 2007) your computer can use more RAM than it has now.
Maximum Memory: 6.0 GB (Actual) 4.0 GB (Apple)
Memory Slots: 2 - 200-pin PC2-5300 (667MHz) DDR2 SO-DIMM
•iMac: How to remove or install memory
And so it should work better even if you stay with Mountain Lion OS X 10.8.5.
The hardware upgrade will help the Mac OS + applications, in basic functions.
[This computer is already considered 'vintage' by Apple...]
Depending on the amount of use the computer has seen so far, it may also be
a candidate for a replacement hard disk drive; perhaps a larger capacity, too.
If you consider an upgrade, also consider a complete backup and a bootable
clone of the current (if updated to 10.8.5 with its applications updated) OS X
on an externally enclosed hard disk drive with its own power supply. You can
see a few of these that do not run on Mac port power, & standalone, at OWC.
{The company known as OWC is macsales.com, a fair example of mac-centric
supplier of quality products for Mac community, awhile. Or so people tell me.}
Clone utilities such as superduper, carboncopy cloner, or disk utility can work.
Test a cloned OS X copy for boot-ability and other function before moving on.
Could be you'd be better off with this computer on Mt Lion than a later OS X.
And a newer later computer should also have hardware specs and some up-
ward expandability for use with the expected new & future changes to OS X.
Hopefully you can get some fair use and more years from your iMac 24".
And that means hope for the best, and plan for the worst. Backup, backup...
Good luck & happy computing!

Cannot expand 2007 iMac to 4GB - freezes

Similar Messages

Maybe you are looking for