Mountain Lion for iMac Late 2009

Is Airplay the only feature that wont work on the older Macs? I don't use Airplay with My iMac (Late 2009) so it's no big deal, its all I hear people complaining about except that it slows down their computers. Is this an older version issue too (speed)?
I like all of the other features, if Airplay is the only thing that won't work then I'm going to download but if there are other issues with older version computers I would like to know. Thanks

Primarily yes. Mt. Lion is like ANY OS X upgrade. Prior to upgrading your system it should be operating perfectly, if it isn't address your problems first or your upgrade could be a disaster. Check to see your apps and peripherals are compatible and then if everything is OK you can proceed. Before beginning your download BACKUP!!!! It's wise to have a minimum of 1 backup but when it comes to backup redundancy is a very good thing.

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How can I get the Application DVD for IMAC Late 2009?

How can I get the Application DVD for IMAC Late 2009?

Disk 2 of the original disks that came with the computer?
Call Apple, give them your computer serial number, and they will ship you disks for a small charge if disks are available. Go to the Apple Store for your country, then to the bottom of the page//Contact Us for the correct telephone number.
If that isn't what you ant, can you provide more information?

Why no airplay mirroring for imac late 2009

Just upgrade to find the key feature Airplay Mirroring is not supported for my iMac late 2009. WHY??

Only some 2011 machines and newer are supported (excluding any Mac Pros).
The best theory is to do with onboard h264 encoding in Ivy Bridge and Sandy Bridge Intel chips:
http://en.wikipedia.org/wiki/Intel_Quick_Sync_Video
It seems likely that Apple feel a software only solution would not be feasible/acceptable on earlier models though Airparrot puts that in doubt.
AC

Should I do a clean install of Mountain Lion on a late 2009 iMac or will I find hardware/driver issues?

I have a late 2009 iMac (2.93 Ghz Intel Core Duo, 4GB of ram, model id is 9.1) running Lion right now. I upgraded it all the way from Leopard using the standard keep-all-your-apps-and-settings way. After looking at the hardware requirements for Mountain Lion (and my success with running Lion) it seems that my good ol' iMac is still capable of running it fairly well. But I don't like the idea of "stacking" upgrade after upgrade (*coughs*, clean freak!). I like the idea of starting out clean this time because so many years of use has filled my mac with a lot of crap I no longer use.
So I would like to know your sane advice, and if there's anything I should check out before attempting this. Especially I'm concerned about hardware/driver related issues like for example: the webcam or speakers no longer working. Also, if there's something I'm overlooking please point it out.
Thank you in advance for any help you guys can give me. I'll be very grateful!

If it wasn't a Mac computer that originally came with either Lion or Mt Lion Pre-Installed by Apple when new you would not be able to connect to the Online Internet Recovery system. It is a Feature of the Mac EFI Firmware system. And it will only install whichever version of the Download only version of OS X that originally came on that system.
My MBP came with Lion Preinstalled. Even if I have Mt Lion installed on the hard drive the Online Internet Recovery system would always point my MBP to the Lion download as that was the original version of OS X that came on my Mac.
No real authentication needed. Since your Mac came with Mt Lion no matter what newer versionof OS X you ever install the OIRS will always point you to Mt Lion and ONLY Mt Lion.
It is something different, but not completely different, from the built in Recovery HD partition on the internal drive.
No worries as during the install of MT Lion on your SSD the installer will Recreate the Mt Lion Recovery HD partition on your SSD.

After Mountain Lion installed, 27" late 2009 iMac won't sleep

As the title says.....
Worked fine since new, but with Mountain Lion, it won't auto sleep. I have a numbe of iProducts, but only this one isn't working. Energy saver settings are fine.
Desired behavior is after a few minutes the screen goes dark, then spool down after 15min, but it never happens. It will sleep if I hit the power button.

trying a clone after all due to this discussion https://discussions.apple.com/message/20938457#20938457

Mountain Lion for Imac 5.1

My computer is an IMac 5.1 running 10.6.8 Can I upgrade to Mountain Lion. I am trying to share calendars and use icloud., My computer is an IMac 5.1. Can I upgrade to Mountain Lion. I am trying to share calendars and use icloud. This apparently requires Mountain Lion. Thanks Bill C.

My computer is an IMac 5.1. Can I upgrade to Mountain Lion.
No. An iMac 5.1 is a late 2006 machine. An iMac 7.1 (Mid 2007) is the minimum needed for Mountain Lion.
If you have 2 Gigs of RAM, it will run Lion. It can be special ordered by calling Apple.

I can't seem to get my iMac (late 2009 model) into automatic sleep mode. If I manually put it into sleep I don't have any issues. I used to solve the issue by running "PleaseSleep" application but that doesn't work anymore since Lion.

I can't seem to get my iMac (late 2009 model) into automatic sleep mode. If I manually put it into sleep I don't have any issues.
I used to solve the issue by running "PleaseSleep" application but that doesn't work anymore since Lion. I now want to fix the underlying problem.
I'm not running any weird background processes and in my energy saver settings I've tagged "put the hard disk to sleep when possible:, "allow power button to put computer to sleep" and "automatically reduce brigthness". All pretty standard.
Is there anyone who can give me some pointers ?

Today I solved the same problem for my iMac running Snow Leopard. See https://discussions.apple.com/thread/3008791#15947706. The method may help you, too.
For me it was the DynDNS Updater preventing my iMac from automatically entering sleep mode.
To my knowledge the cause of this sleep problem can only be a peripheral device or a process. So I suggest to first unplug all peripherals and test whether that's the cause. If not, I suggest to terminate one process after another and to test automatic entering of sleep mode after each. Start with user processes; continue with system process if necessary.
At least that's the way I found the offending process. Fortunately, I was able to change the configuration of that process to allow again automatic entering of sleep mode.
Good luck!

I have installed mountain lion on my early 2009 macbook (not unibody) and it is terrible, it's like owning a windows pc again (almost) What can I do? I paid for mountain lion, is there any way of giving it back and getting a refund?

I have installed mountain lion on my early 2009 macbook (not unibody) and it is terrible, it's like owning a windows pc again (almost) What can I do? I paid for mountain lion, is there any way of giving it back and getting a refund? obvisoulsy after unintalling it. I couldn't see any reason why it would be bad for my particular macbook, and it downloaded without a problem.

In what way is it terrible? Mountain Lion is pretty stable. If you are having problems, most likely they are unique to your particular system and can be fixed. If you don't like some of the new features, that does not constitute reason for a refund.
If that does not suit you, you will have to discuss a refund with Apple, as they are the only ones who can say. Note that the App Store terms do say that all sales are final, so you are not guaranteed a refund, especially since whatever problems you had are not due to defective software.

HT3924 Can I use my 27"iMac late 2009 as an external display for a non apple product such as a cable box?

Can I use my 27"iMac late 2009 as an external display for a non apple product such as a cable box?

To get TV on your iMac off the cable box you would need to use an external TV tuner device such as the company ElGato is highly regarded for. I have used one of their EyeTV products for many years with my iMac to watch television shows from my Comcasst cable TV box. You can look at the models here:
http://www.elgato.com/elgato/na/mainmenu/products.en.html

Where can I buy a new 3.5" SATA HDD with the extra thermal sensor port for my late 2009 imac?

where can I buy a new 3.5" SATA HDD with the extra thermal sensor port for my late 2009 imac?

Depends on the original drive. According to OWC, at least last time I checked some months ago, any current WD drive they sell (up to 2 TB?) will be able to be swapped directly. I am unable to confirm this personally. But, even so, that was a while back. You should check with them again on this. As for Seagates, that might not be so simple.
This is the original article on this from them.
http://blog.macsales.com/2751-proprietary-cable-can-put-the-brakes-on-upgrading- late-09-imacs
If you find a drive that OWC sells and is certain will swap in directly, you can see if newegg.com has it for less.
This one that OWC sells will swap in directly, according to them.
http://www.newegg.com/Product/Product.aspx?Item=N82E16822236339

I have three iMacs - do i have to buy a copy of mountain lion for each?

I have three iMacs - do i have to buy a copy of mountain lion for each?

What Russa is saying is that if you don't save "Install OS X Mountain Lion.app" before you install you'll need to download it again each time. It's important to save it before you install because it self-destructs after restart.

Can I use 27' iMac(Later 2009) as a display for Mac Pro(future 2013)?

Can I use 27' iMac(Later 2009) as a display for Mac Pro(future 2013)?

See > http://support.apple.com/kb/PH11302
To be able to use the iMac as an external display, the Mac Pro should come with a Mini DisplayPort or Thunderbolt port, so think that it will include Mini DisplayPort or Thunderbolt, although we don't know anything.
To connect the iMac to the Mac Pro, as your iMac has got a Mini DisplayPort, you have to use a Mini DisplayPort to Mini DisplayPort cable (Thunderbolt is compatible with Mini DisplayPort cables, but Mini DisplayPort isn't compatible with Thunderbolt cables). Then, just follow the steps of the page above to use the iMac as an external display

I just downloaded Mountain Lion for my MacBook Pro from the App Store. Can I also download it for my iMac without paying the $19.99 fee again?

I just downloaded Mountain Lion for my MacBook Pro from the App Store. I was curious if it is possible to downloand Mountain Lion to my iMac without paying the $19.99 fee again? Not trying to be a cheapskate, just curious if App Store purchases are universal like iTunes Apps.

You can re download Mountain Lion for free on all your authorized Macs using the same Apple ID used for the original purchase.
How to re download apps from the Mac App Store:
Open the App Store. From the menu bar click Store > Sign In
Click Purchases from the top of the App Store window.
Select Mountain Lion.
Then right or control click where you see Installed then click Install.

HT1338 if I purchased the OS X Mountain Lion for my 27" IMac do I have to purchase another one for my MacBook Pro

I purchased both 27" iMac and MacBook Pro on March 2012 wth Lion OS installed. I just upgraded to the OS X Mountain Lion for my iMac and was wondering whether I have to pay again for the upgrade for my MBP?

no you do not need to purchase it again. You can install it on multiple macs you own. Sign in to the app store with the apple id used to purchase ML on the mac(s) you wish to install it on. Hold down the option key and click on the purchases tab and click "download" next to ML.

HT5444 I would like to use a copy of Mountain Lion for development, but the store tells me I cannot download it because my MacBook 4,1 is not compatible! What can I do to download it?

I would like to use a copy of Mountain Lion for development, but the store tells me I cannot download it because my MacBook 4,1 is not compatible! What can I do to download it?
I have paid for it and all...

You can't do anything. See:
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
Your computer does not meet the requirements to run Mountain Lion.
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.

Mountain Lion for iMac Late 2009

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