Do I need to buy a separate download of Mountain Lion for each Mac that I own?

No, not if you bought it as an upgrade option.
Mountain Lion multi-computer installation license discussion - https://discussions.apple.com/thread/4142823
http://osxdaily.com/2012/07/26/install-upgrade-os-x-mountain-lion-multiple-macs/

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I participated in getting the free download of Mountain Lion for new Mac owners. It took me three days to finally get a code to do it and when I tried downloading it, the estimated time was 74 days 17 hours. Now an error occurred. What do I do?

I participated in getting the free download of Mountain Lion for new Mac owners. It took me three days to finally get a code to do it and when I tried downloading it, the estimated time was 74 days 17 hours. Now an error occurred. What do I do? I am very frustrated and just want the great software to download in a resonalbe time!

Take your Mac to a location with a fast, relaible Internet connection that will be all yours during the duration of the download.
If you want to complain, PLEASE call Apple and do so.
Internet only downloads of OS X is completely stupid, it assumes everyone has reliable Internet everywhere and /or no data caps.

Guys! can anyone tell me how can i download OX mountain lion for my mac?

I need to download Mac OX mountain lion 10.8 for my friend. Can anyone share how can i download it and from where ..???

The purchase of Mountain Lion is not an "all you share license". The person who buys ML on their App Store account can install it on as many Macs as they own. No one else's.
It's only $20. Have your friend buy their own copy.
http://store.apple.com/us/product/D6377Z/A/os-x-mountain-lion

HT5286 I want to buy a new os x mountain lion for my mac

Im running of os x lion and no beed to reinstslling maverics which is cant boot and cant install to my mac even im using internet recovery.

Mountrain Lion: http://store.apple.com/us/product/D6377Z/A/os-x-mountain-lion
Mavericks is better and it is free, IMHO.
The tech requirements for Mountain Lion and Mavericks are the same. If you don't meet them for Mavericks, you don't meet them for Mountain Lion too.

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.

I have a hdd from late 2009 that I upgraded from leopard to snow leopard to lion to mountain lion. I want to upgrade the hdd to ssd. Do I need to buy a new copy of mountain lion to install on the ssd? If not, then what is the procedure to transfer?

I have a hdd from a late 2009 mbp. I upgraded from leopard to snow leopard to lion to mountain lion. Now I want to upgrade to a ssd. Do I need to purchase a new copy of mountain lion to go on my new ssd? If I don't, then what is the procedure to transfer mountain lion with my 4 user accounts onto the new ssd from the hdd?
I'm confused on if I can use the recovery hd on a thumb drive to install mountain lion on my ssd. Will it be pheasible with so many OS X upgrades? And then how do I get my user accounts onto the ssd from the hdd. Do I use migration assistant? Do I need to make a time machine backup first? Should I use something called Carbon Clone or something like that?
Thanks for reading

If you have a cable that connects and external HDD to the MBP, it will do. If it is something like this, an enclosure will not be needed for the swap:
An enclosure allows you to use your old HDD for storage or backup purposes. The cable will not.
Here are instructions as to how the swap can be performed using DISK UTITY. Substitute You cable for the enclosure in same:
INSTALLING A NEW HDD IN A MBP
1. Make certain that you have backed up all of your important data.
2. You will need a HDD enclosure. One with a USB connection will do. A 9 pin Firewire is better.
3. Install your new drive in the enclosure and connect it to your MBP.
4. Open DISK UTILITY>ERASE. From the left hand column drag the new drive into the 'Name' field. Make sure that the format is 'Mac OS Extended (Journaled)'. Click on the 'Erase' button.
5. Click on the 'Restore' button (on top). Drag the old drive into the 'Source' field and the new drive into the 'Destination' field. Click on the 'Restore' button on the bottom right hand corner.
Depending upon the amount of data you are transferring, this may take a couple hours or more. A Firewire will speed up the transfer. This will result in both drives having identical information on them.
6. After the data transfer has completed, you may swap the drives. Start the MBP and you have finished the installation. The initial boot may take a bit longer than you are accustomed to, but that is normal.
7. When you are satisfied that the new hard drive if functioning properly, you can erase the old drive and use it for any needs that you may have.
If there is any confusion on your part, post back.
Ciao.

Nach dem Download von Mountain Lion, verlangt mein mac book pro die Neuinstallation von iwork 08. Es wird die Seriennummer verlangt. 5ch habe alle Möglichkeiten von dem winigen Aufkleber eingegeben, aber immer heißt es "Seriennummer ist nicht richtig".

Wo steht die Seriennummer von "iwork08"?
Seit dem Download von Mountain Lion kann ich keine Dateien mehr öffnen.
Muss die Installation von Office 2011 und iWork 08 wirklich sein?
Habe beides ordentlich gekauft und kann es nun nicht nutzen.

Hi heikeibe
Can you get so far as to see/open any of the iWork apps themselves (eg Pages)?
If so, if you click on the relevant name of the app (eg Pages) in the tool bar, and then click on "About Pages" you will see the serial number there: it will probably look something like this
ABCD-EFGH-IJKL-123Z-ABCD-WYZ

I am using Leopard but need Mountain Lion for the Mac App Store. How do I get Snow Leopard to be able to upgrade to Mountain Lion?

I am currently using Leopard but need Snow Leopard to be able to get Mountain Lion. I can see this is no longer available from Apple. How would I get it so I could then get Mountain Lion. I want the Logic 9 Mac App Store App as I don't want to have to buy the whole Logc 9 from Studio 8.
Some help would be much appreciated.
Thanks
Adam

Upgrading to 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.
If you need to purchase Snow Leopard contact Customer Service: Contacting Apple for support and service. The price is $29.00 plus tax. You will receive physical media - DVD - by mail.
Third-party sources for Snow Leopard are:
Snow Leopard from Amazon.com
Snow Leopard from eBay
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.
If you need to purchase Lion contact Customer Service: Contacting Apple for support and service. The cost is $19.99 (as it was before) plus tax. It's a download.
Be sure your computer meets the minimum requirements:
Apple - OS X Mountain Lion - Read the technical specifications.
Macs that can be upgraded to OS X Mountain Lion
iMac (Mid 2007 or newer)
MacBook (Late 2008 Aluminum, or Early 2009 or newer)
MacBook Pro (Mid/Late 2007 or newer)
MacBook Air (Late 2008 or newer)
Mac mini (Early 2009 or newer)
Mac Pro (Early 2008 or newer)
Xserve (Early 2009)
Are my applications compatible?
See App Compatibility Table - RoaringApps - App compatibility and feature support for OS X & iOS.
For a complete How-To introduction from Apple see Apple - Upgrade your Mac to OS X Mountain Lion.

I download OSX mountain Lion and my mac is very slow.Any idea why?

After downloading mountain lion my mac gets slow...any idea why?

Try this:
Boot into Safe Mode then reboot normally. Do the following:
Repair the Hard Drive and Permissions - Lion/Mountain Lion
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. Select Restart from the Apple menu.
Does this help? If not, then you should reinstall Mountain Lion:
Reinstalling Lion/Mountain Lion Without Erasing the 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 the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
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 click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

I am unable to Download Mountain Lion for my Mac Pro.

This really *****. Now I know why I can't download Mountain Lion!!!! I have an 8 core Mac Pro at 3ghz
Hardware Overview:
Model Name:          Mac Pro
Model Identifier:          MacPro2,1
Processor Name:          Quad-Core Intel Xeon
Processor Speed:          3 GHz
Number of Processors:          2
Total Number of Cores:          8
L2 Cache (per Processor):          8 MB
Memory:          16 GB
Bus Speed:          1.33 GHz
Boot ROM Version:          MP21.007F.B06
SMC Version (system):          1.15f3
Serial Number (system):          157191HTUPZ
Hardware UUID:          00000000-0000-1000-8000-0019E3F8CB92
And It is too slow to run Mountain Lion. I doubt it. This would not be the case if Apple Supported the Cores parallelism as they are suposed to do. I know this computer is faster than my MacBookPro; How about it Apple, Why not write software to support all my 8 cores and you won;t have to force me to stop using the new Apple System Software. Why can't we users be the ones to determine if our machines run too slow under Mountain Lion? I can't afford a new Mac Pro; you surely now how to hurt a User/Developer.
Thanks for Nothing, Apple!
USER/Developer
Robert Adams

As a Developer, you are bound by your agreement to not use public forums to discuss beta products.
Pls, use the confidential forums in the Dev Center for this purpose, thanks.

I cannot download the OS X Mountain Lion for the Mac Mini

I purchased a Mac Mini last week and cannot install the latest version of Mountain Lion. This is preventing me from installing the current version of Aperture. I read on cnet.com that this is an issue. Has Apple provided a fix?
Thanks, Mark

The update was available last week and Apple removed it; I'm sure there was a reason why they did that.
In any case, there are two different builds of 10.8.2 - that is why one version is and will be available since it is for the majority of machines out there. That build is 12C60 (and is running on my 2010 iMac). Only some 2012 machines such as yours require a special build which is the one that was taken off for the moment (before it disappeared, that was build 12C3006).
So, try to be patient; hopefully they're working on it and the update will be available asap.

I recently purchased mountain lion for my mac book air.... The first few times i tried to install it it would download but would not install.... now it will not finish downloading.... I have no idea what to do.

I have no idea what to do its the first time i have any trouble intalling somthing in my mac... I thougt it would be a great upgrade for my Macbook air (purchased last year)
Does anyone know how i should proceed.

Clntxwhtby wrote:
Hay thank you for your time . I do that every time I know I am online. It says that I am up to date . I have found that I have 10.4.11 version, and that my boot version is 10.6.2, and that my kernel version is 8.11.1.
I have a hard drive icon on my desktop that says 10.6.2....
I use to have iphoto, it doesnt open anymore, it says there is 1.2gigs on that disk.There are many things on here that are the same way. Where do I start?
It's always good to go with one thing at a time and stay focused on that. Let's start with the OS you're running. Click on the Apple menu > About This Mac. What does it say under Mac OS X version ?

Nach dem download von mountain lion verlangt mein mac book pro die Neuinstallierung von meinem vor vier Jahren gekauften iWork 08. Alle eingegebenen Nummern von dem Aufkleber werden nicht angenommen. Ohne diese Seriennummer komme ich an kein Dokument.

Wie finde ich die Seriennummer meines iWork 08? Nach der Installation von mountain lion kann ich weder pages-, noch numbers-, noch keynote-Dokumente öffnen, somit auch nicht den Balken "Über numbers". Alle eingegeben Nummern von dem winzigen Aufkleber der Verpackung werden nicht akzeptiert. Ist das die Art, wie man gezwungen wird ein neues iWork zu kaufen?

How do I download an OS (Lion) for a used-IMac that's had a complete memory wipe?

I just recently bought a used-Imac (only 5 months old) from a friend of mine which he did a complete memory wipe on the computer. Operating System and all. He had Mountain Lion which is the operating system the computer is asking me to reinstall but I can't because my apple I.D. never purchased Mountain Lion. He told me that he got it illegally which I didn't care too much for. I know the OS is only $20 which I would gladly pay for but the problem is that I have to have OS X v10.7 Lion to be able to download it. I tried downloading a version of it but it had said that I didn't have enough space on my disc for it? By the way, did I mention that nearly all memory was wiped away from the computer. I had 230-something gigabytes on my computer so this didn't make any sense to me as to why it couldn't download 10.7 Lion. Can anyone help me on this?

You only need Snow Leopard 10.6.8 in order to download Mountain Lion.
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 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.

What happens when I can not buy OS X 10.8 Mountain Lion?

Hi,
I tried to buy OS X 10.8 Mountain Lion and it said that my imac is not compatible with the OS X 10.8 Mountain Lion App. What now?
Thanks,
relaxed4102

If your system is not one of the ones listed here:
http://www.apple.com/osx/how-to-upgrade/
then there's nothing you can do to get and install Mountain Lion. If your system is one of those listed, you need to have Mac OS X 10.6.8 or Mac OS X 10.7 to be able to buy and install Mountain Lion. You cannot upgrade from Mac OS X 10.5.2 which is the OS version shown in your profile.
Regards.

Do I need to buy a separate download of Mountain Lion for each Mac that I own?

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