I am wanting to upgrade my iMac to Mountain Lion... a few questions first...

Machine Specs
Model Name:     iMac
Model Identifier:     iMac9,1
Processor Name:     Intel Core 2 Duo
Processor Speed:     2.66 GHz
Number Of Processors:     1
Total Number Of Cores:     2
L2 Cache:     6 MB
Memory:     4 GB
Bus Speed:     1.07 GHz
So basically I am wanting to make sure I am compatible(pretty certain I am)
And if so, do I need to backup everything?
I have had this machine for several years, so there is much I would need to backup.
I have recently picked up a MacBook Pro, and upgraded tonight to OSX Mountain Lion, everything was fine and still here after install, incl all my programs.
There wasnt much on it so I wasnt bothered if it did get wiped.
I am basically wanting to setup my WDig 2TB Ext HD to run as my media storage and run my music player to play FROM that, to free up disc space and make my machine run better
Hopefully there's not "too much meat in the sandwich" there but hoping someone(s) can help out.

If you don't have backups, you need to make some ASAP, preferably even before you finish reading the rest of this message! And you certainly should do so before even considering something like installing a major system upgrade.
As to compatibility, I believe that machine should be compatible, but the easiest way to find out for sure is to just try buying Mountain Lion on the App Store. If the machine isn't compatible, it won't let you, as I understand it.

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The apple store is so unhelpful. I have an iMac computer operating on Mac OSX 10.5.8. I want to upgrade to the latest Mountain Lion operating system so I can work with the iCloud on my computer and download my email. I can't seem to purchase this on-line

The apple store is so unhelpful. I have an iMac computer operating on Mac OSX 10.5.8. I want to upgrade to the latest Mountain Lion operating system so I can work with the iCloud on my computer and download my emails. I can't seem to purchase this on-line as it keeps telling me to go to the app store. I haven't got the app store on my computer as I am told I need iCloud for which I need the new operating system, which I can't download or purchase as I am sent back to an instruction telling mee to go to the app store icon.
How difficult can it be to simply purchase the software on-line have it shipped to you so you can install it, in the event it cannot be downloaded as it appears it can't be based on my curent operating systems being Mac OSX 10.5.8.

Requirements for OS X 10.6 'Snow Leopard'
http://support.apple.com/kb/SP575
Whilst Apple have withdrawn Snow Leopard from download, you can still get it from Apple by calling 1-800-MY-APPLE (if you are in the USA) and they will supply the SL DVD for $30. You can also purchase the code to use to download Lion from the same number.
Requirements for Mountain Lion:
http://www.apple.com/osx/specs/

I have OS X 10.5.8 and I want to upgrade, but not to Mountain Lion.

I have OS X 10.5.8 and I want to upgrade, but not to Mountain Lion. How do I upgrade to Leopard or snow leopard?

Upgrade Paths to Snow Leopard, Lion, and/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. To access the App Store you must have Snow Leopard 10.6.6 or later installed.
Upgrading to Snow Leopard
You can purchase Snow Leopard through the Apple Store: Mac OS X 10.6 Snow Leopard — Apple Store (U.S.). The price is $19.99 plus tax. You will be sent physical media by mail after placing your order.
After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store. Access to the App Store enables you to download Mountain Lion if your computer meets the requirements.
     Snow Leopard General Requirements
       1. Mac computer with an Intel processor
       2. 1GB of memory
       3. 5GB of available disk space
       4. DVD drive for installation
       5. Some features require a compatible Internet service provider;
           fees may apply.
       6. Some features require Apple’s iCloud services; fees and
           terms apply.
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.

I have an older 13" macbook with snow leopard, I want to upgrade to the newest mountain lion, can i just purchase and instal?

I have an older 13" macbook with snow leopard, I want to upgrade to the newest mountain lion, can i just purchase and instal?

Upgrade Paths to Snow Leopard, Lion, and/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. To access the App Store you must have Snow Leopard 10.6.6 or later installed.
Upgrading to Snow Leopard
You can purchase Snow Leopard through the Apple Store: Mac OS X 10.6 Snow Leopard - Apple Store (U.S.). The price is $19.99 plus tax. You will be sent physical media by mail after placing your order.
After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store. Access to the App Store enables you to download Mountain Lion if your computer meets the requirements.
     Snow Leopard General Requirements
       1. Mac computer with an Intel processor
       2. 1GB of memory
       3. 5GB of available disk space
       4. DVD drive for installation
       5. Some features require a compatible Internet service provider;
           fees may apply.
       6. Some features require Apple’s iCloud services; fees and
           terms apply.
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.

I have a early 2011 Macbook pro 13 inch, I'm running Lion 10.7.4, and i want to upgrade to 10.8 Mountain Lion. Is it safe for my computer or are people experiencing problems with displays and Battery life?

I have a early 2011 Macbook pro 13 inch, I'm running Lion 10.7.4, and i want to upgrade to 10.8 Mountain Lion. Is it safe for my computer or are people experiencing problems with displays and Battery life?
Do Not post stuff about how Airplay doesnt work, because i dont have Apple TV and dont need to hear about it.

If you have an external drive equal to or larger than your internal HD, clone your internal to it with either Carbon Copy Cloner or Super Duper. Test the clone to make sure it's bootable. Then upgrade either one. Try it out first.

I want to Upgrade my Mac to Mountain Lion through OS X Mountain Lion Up-to-Date Program.

I want to Upgrade my Mac to Mountain Lion through OS X Mountain Lion Up-to-Date Program. I could not see the option on website..Any help on the same..?

One can purchase and download Mt. Lion from the App Store. The requirements for Mt. Lion are as follows:
http://support.apple.com/kb/HT5444
Ciao.

I upgraded my imac to Mountain Lion and my iMac has been painfully slow ever since. Any ideas what might be wrong and how to fix it?

I upgraded my iMac to Mountain Lion and it has been painfully slow ever since. Any ideas on what might be happening and how to fix it?

First, back up all data immediately, as your boot drive might be failing.
There are a few other possible causes of generalized slow performance that you can rule out easily.
If you have many image or video files on the Desktop with preview icons, move them to another folder.
If applicable, uncheck all boxes in the iCloud preference pane.
Disconnect all non-essential wired peripherals and remove aftermarket expansion cards, if any.
Otherwise, take the steps below when you notice the slowdown.
Step 1
Launch the Activity Monitor application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Activity Monitor in the icon grid.
Select the CPU tab of the Activity Monitor window.
Select All Processes from the menu in the toolbar, if not already selected.
Click the heading of the % CPU column in the process table to sort the entries by CPU usage. You may have to click it twice to get the highest value at the top. What is it, and what is the process? Also post the values for % User, % System, and % Idle at the bottom of the window.
Select the System Memory tab. What values are shown in the bottom part of the window for Page outs and Swap used?
Next, select the Disk Activity tab. Post the approximate values shown for Reads in/sec and Writes out/sec (not Reads in and Writes out.)
Step 2
If you have more than one user account, you must be logged in as an administrator to carry out this step.
Launch the Console application in the same way you launched Activity Monitor. Make sure the title of the Console window is All Messages. If it isn't, select All Messages from the SYSTEM LOG QUERIES menu on the left. If you don't see that menu, select
View ▹ Show Log List
from the menu bar.
Select the 50 or so most recent entries in the log. Copy them to the Clipboard (command-C). Paste into a reply to this message (command-V). You're looking for entries at the end of the log, not at the beginning.
When posting a log extract, be selective. Don't post more than is requested.
Please do not indiscriminately dump thousands of lines from the log into this discussion.
Important: Some personal information, such as your name, may appear in the log. Anonymize before posting. That should be easy to do if your extract is not too long.

I upgraded my iMac to Mountain Lion and now my Canon Pixima MP500 will not open because PowerPC apps are no longer supported! Has anyone experience this problem?

I upgraded my iMac to Mountain Lion and now my Canon Pixima MP500 will not open because PowerPC apps are no longer supported! Has anyone experience this problem?

Correct. Applications designed to run on the old PPC Macs (which Apple stopped making in 2005) cannot run on Mountain Lion.
You need to update your printer driver:
Printer and Scanner software available for download:
http://support.apple.com/kb/HT3669?viewlocale=en_US

How to determine if I can upgrade my iMAC to Mountain Lion

I believe my iMac 24" is mid 2007 or later but need to make sure it is before I attempt to upgrade to Mountain Lion.

http://www.everymac.com/systems/apple/index-apple-specs-applespec.html
Get more information about your computer. Go to the Apple in the upper left corner of any window, then "About This Mac", then "More Info..."
Mac OS X: System requirements for Mountain Lion (10.8) - http://www.apple.com/macosx/specs.html

I upgraded my iMac with mountain lion. I can't now use iCloud and Mail. I have the error message : impossible to activate Mail wait a moment and try another time (This is translation from French).

I've made the operation several rtimes withoiut any success

From the Mail menu bar, select
Window ▹ Connection Doctor
Look for the unwanted SMTP (outgoing mail) account in the window that opens. Double-click it. Another window will open, showing a list of all the outgoing mail accounts. The unwanted one will be selected. Click the minus-sign button to delete it, then click OK.
If there's more than one unwanted account, repeat.

I'm running os 10.5.8 and want to upgrade to new mountain lion but need to first upgrade to 10.6.8. I downloaded that but got message saying i needed 10.6 first, which I can't seem to find anywhere. When i try Software Update from the apple menu, it says

Help! I want to upgrade to the new Mountain Lion OS but first need to upgrade rto 10.6.8. I'm currenty running 10.5.8. When i try the Software update from my desktop apple menu, it says i already have the most redent software. I tried downloading 10.6.8 but when i tried to run it said i first need 10.6, which i can't seem to find anywhere on the Apple site or internet. Any suggestions? Can i somehow not upgrade form 10.5.8 to 10.6 or higher?
Thanks.

Get this from Amazon before the prices really get out of control!
OS X 10.6.3
http://www.amazon.com/Mac-version-10-6-3-Snow-Leopard/dp/B001AMHWP8/ref=sr_1_1?s =software&ie=UTF8&qid=1343250995&sr=1-1&keywords=OS+X+Snow+Leopard
OR
OS X 10.6.0
http://www.amazon.com/Mac-OS-Snow-Leopard-10-6/dp/B002KG02QO/ref=sr_1_2?s=softwa re&ie=UTF8&qid=1343250995&sr=1-2&keywords=OS+X+Snow+Leopard

Does my iMac 11.2 supports airplay mirroring if i´ll upgrade my OSX to mountain lion?

Hi everybody,
I have an Apple TV3 just upgraded today to the last version and an iMac 11,2.
Does my iMac 11,2 supports airplay mirroring fearure if i upgrade my iMac to Mountain Lion?
In everyplace i see Mid 2011 iMac or later, but i don´t know what iMac version that is.
Thanks in advance!!!!!

Welcome to Apple Support Communities
Your computer isn't compatible

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Thanks for any help

That machine will support 8GB RAM, please look over
http://eshop.macsales.com/item/Other%20World%20Computing/8566DDR3S8GP/
for the correct RAM. BTW OWC is a trusted vendor they specialize in Macs so you know what they sell works. They also have about the best customer service in the business.

I am wanting to upgrade my iMac to Mountain Lion... a few questions first...

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