Is it mandatory to download Mountain Lion in all of Mac PCs

I have downloaded the Mountain Lion OS X in my new iMac. I would like to upgrade my Macbook pro(Contains Snowleopard) and my father Mac too.
I have copied the Install OS X Mountain Lion.app file , and tried to open in my Macbook pro. It is not at all opening. But If I right click and give Show Package Contents, I am able to find the dmg file inside it. So, now I am able to open the launcher for installing the OS.
But I wonder, whether this could result in any problem. Because I heard that the apple will not recommend this kind of things. My internet connection is also slow, where I can't download this OS everytime.
Can anyone tell me , if we install the OS by using show package contents etc, options, is that legal ?? Will it be a problem ?

If you are referring to Enterprise or other commercial use, you should contact Apple as we are just users like you volunteering our time to help and really are in no position to answer legal questions. Here are some relevant excerpts from the Mountain Lion licensing agreement:
B. Mac App Store License. If you obtained a license for the Apple Software from the Mac App Store, then subject to the terms and conditions of this License and as permitted by the Mac App Store Usage Rules set forth in the App Store Terms and Conditions (http://www.apple.com/legal/ itunes/ww/) (“Usage Rules”), you are granted a limited, non-transferable, non-exclusive license:
to download, install, use and run for personal, non-commercial use, one (1) copy of the Apple Software directly on each Apple-branded computer running OS X Lion or OS X Snow Leopard (“Mac Computer”) that you own or control;
(ii) If you are a commercial enterprise or educational institution, to download, install, use and run one (1) copy of the Apple Software for use either: (a) by a single individual on each of the Mac Computer(s) that you own or control, or (b) by multiple individuals on a single shared Mac Computer that you own or control. For example, a single employee may use the Apple Software on both the employee’s desktop Mac Computer and laptop Mac Computer, or multiple students may serially use the Apple Software on a single Mac Computer located at a resource center or library;
and:
C. Volume or Maintenance License. If you obtained the Apple Software under a volume or maintenance license program with Apple, the terms of your volume or maintenance license will determine the number of copies of the Apple Software you are permitted to download, install, use and run on Apple-branded computers you own or control. Except as agreed to in writing by Apple, all other terms and conditions of this License shall apply to your use of the Apple Software obtained under a volume or maintenance license.
I understand this to mean that the license you purchased is not for enterprise or commercial use unless it is only used by one person or one computer by several people. It is for your personal use for any Mac you own and control. Here is the link so you can download and read it:
http://www.apple.com/legal/sla/

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HT2602 If i download mountain lion will all user accounts use this operating system automatically?

If i download mountain lion will all user accounts use this operating system automatically? Or do I need to download it for each user... Its taking ages to download too.

Welcome to the Apple Support Communities
When you upgrade the operating system, all users are upgraded to be used with the new version, so you won't have to upgrade OS X each time for all your users

Do i have to buy mountain lion on all my macs or can i buy it on 1 apple ID and then download them on all my macs?

i was wondering if i have to buy mountain lion on all my macs or with just paying 1's the 20$ i can install it on all my mac's

You can download ML on all Macs that are linked to the same iTunes account.

How do you install mountain lion on all your macs in the household using one 20 dollar license?

how do you install mountain lion on all your macs in the houshold with the same license (you only pay 20 bucks for all your macs) is that right?

As long as they're all logged into the Mac App store with the same Apple ID, you can re-download the installer to all the Macs.
Or you can save a copy of the installer file before you run it and use that to update the other Macs. The ML installer file will appear in your Applications folder when it's done downloading. Copy it to another location (don't move it).
If you don't copy it before you upgrade, it will disappear when ML is finished installing.

How do I download Mountain Lion on an old mac?

I have been relentlessly trying to update my mothers Mac. She has an older version of OS X, 10.5.8. I was attempting to download Mountain Lion, but I for the life of me could not get it to work. I have emailed Apple several times with no reply. How do I go about updating her mac to Yosemite?

Before embarking on a major OS upgrade, it would be wise, advisable and very prudent if you backup your current system to an external connected and Mac formatted Flash drive OR externally connected USB, Thunderbolt or FireWire 800, Mac formatted hard drive. Then, use either OS X Time Machine app to backup your entire system to the external drive OR purchase, install and use a data cloning app, like CarbonCopyCloner or SuperDuper, to make an exact and bootable copy (clone) of your entire Mac's internal hard drive. This step is really needed in case something goes wrong with the install of the new OS or you simply do not like the new OS, you have a very easy way/procedure to return your Mac to its former working state.
Then, determine if your Mac meets ALL minimum system install requirements.
Mac OS X v10.6 Snow Leopard system requirements
Purchased Installer disc here.
http://store.apple.com/us/product/MC573Z/A/mac-os-x-106-snow-leopard
To install Snow Leopard for the first time, you must have a Mac with:
An Intel processor
An internal or external DVD drive, or DVD or CD Sharing
At least 1 GB of RAM (additional RAM is recommended)
A built-in display or a display connected to an Apple-supplied video card supported by your computer
At least 5 GB of disk space available, or 7 GB of disk space if you install the developer tools
OS X Lion system requirements
Purchased emailed download code here.
http://store.apple.com/us/product/D6106Z/A/os-x-lion
To use Lion, make sure your computer has the following:
An Intel Core 2 Duo, Core i3, Core i5, Core i7, or Xeon processor
Mac OS X v10.6.6 or later to install via the Mac App Store (v10.6.8 recommended)
7 GB of available disk space
2 GB of RAM
To install OS X 10.8 Mountain Lion, 10.9 Mavericks (currently unavailable) or OS X 10.10 Yosemite.you need one of these Macs:
OS X 10.8 Mountain Lion purchased emailed download code here.
http://store.apple.com/us/product/D6377Z/A/os-x-mountain-lion
iMac (Mid-2007 or later)
MacBook (13-inch Aluminum, Late 2008), (13-inch, Early 2009 or later)
MacBook Pro (13-inch, Mid-2009 or later),
MacBook Pro (15-inch or 17-inch, Mid/Late 2007 or later)
MacBook Air (Late 2008 or later)
Mac mini (Early 2009 or later)
Mac Pro (Early 2008 or later)
Xserve (Early 2009)
Your Mac also needs:
OS X Mountain Lion, Lion, or Snow Leopard v10.6.8 already installed
2 GB or more of memory (I strongly advise, at least, 4 GBs of RAM or more)
8 GB or more of available space
Next,
If you run any older Mac software from the earlier PowerPC Macs, then none of this software will work with the newer OS X versions (10.7 and onward). OS X Snow Leopard had a magical and invisible PowerPC emulation application, called Rosetta, that worked seamlessly in the background that still allowed older PowerPC coded software to still operate in a Intel CPU Mac.
The use of Rosetta ended with OS X Snow Leopard as the Rosetta application was licensed to Apple, from a software company called Transitive, which got bought out, I believe, by IBM and Appe could no longer secure their rights to continue to use Rosetta in later versions of OS X.
So, you would need to check to see if you have software on your Mac that maybe older than, say, 2006 or older.
Also, check for app compatibilty here.
http://roaringapps.com/
If you have any commercial antivirus installed and/or hard drive cleaning apps installed on your Mac, like MacKeeper, CleanMyMac, TuneUpMyMac, MacCleanse, etc. now would be a good time to completely uninstall this apps by doing a Google search to learn how to properly uninstall these types of apps.
These types of apps will only cause your Mac issues later after the install of the new OS X version and you will have to completely uninstall these types of apps later.
Once you have determined all of this, you should be able to find the latest versions of OS X by clicking on the Mac App Store icon in the OS X Dock and then login to the Mac App Store using your Apple ID and password and if you purchased a download code, input that code.
You can then begin the download and installation process of installing the newer versions of OS X from the Mac App Store.

Have downloaded Mountain Lion on my 2010 Mac Mini. Now when starting up, after a while I get a message that says, "You must restart your computer." I do that but get the same message again and again. Any ideas? Thanks!

I am having issues trying to start up with Mountain Lion on my 2010 Mac Mini. Here's the scenario:
1) After starting up, I get the usual gray screen with Apple logo.
2) After a few minutes, a darker gray screen scrolls down and in the middle of this is a black dialogue box with reversed (white) text. This text, in multiple languages, reads: "You need to restart your computer." Then it goes on to instruct on how to shut it down and restart it.
3) I follow this instruction, but get the same dialogue box over and over agin.
Any ideas?
Thanks and best wishes.

If you can't boot in the usual way, try a safe boot. The instructions provided by Apple are as follows:
Shut down your computer, wait 30 seconds, and then hold down the shift key while pressing the power button.
When you see the gray Apple logo, release the shift key.
If you are prompted to log in, type your password, and then hold down the shift key again as you click Log in.
During startup, you’ll see a progress bar, and then the login screen, which appears even if you normally log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Safe mode is slower than normal, and some things won’t work at all. Note: If FileVault is enabled under OS X 10.7 or later, or if a firmware password is set, or if the startup volume is on a software RAID, you can’t boot in safe mode. If you're able to boot, launch the Console 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 Console in the icon grid. Select the most recent panic log under System Diagnostic Reports. Post the entire contents — the text, please, not a screenshot. In the interest of privacy, I suggest you edit out the “Anonymous UUID,” a long string of letters, numbers, and dashes in the header and body of the report, if it’s present (it may not be.) Please don't post shutdownStall, spin, or hang reports.

After downloading Mountain Lion neither of my Macs play DVD videos.

My question is... Is there a known issue with the "DVD Player" app with Mountain Lion. Because every since I installed ML neither my iMac or Macbook Pro will play store bought DVD videos, but the drives do recognize music CD's. Is there driver issue or some kind of a fix or patch or something to get my "DVD Player " app working again.
When I install a DVD the app opens and closes unexpectedly, then sends a message to Apple. I would really like this to be fixed.
Jason Wirtz

I've had the exact same problem. I'm sure Apple is working frantically *cough* to get this taken care of rather than devoting their entire staff to correcting errors on Apple Maps app on the iPhone 5.

How long does it take to download mountain lion

just downloading mountain lion on my imac ( MAC OS X 10.7.5) ---any idea how long it should take? its starting to look like its going to be slow...

That's around 1.6 MB/s or approximately. So it should take about one hour at that speed. However, your service speed is not necessarily the transfer speed between you and the Apple servers. Expect the actual time to be longer.

HT202159 Whilst downloading mountain lion - I get in red "An error has occurred" and no ability to resume the download - amy ideas?

I am trying to download mountain lion on to a mac pro but the message I get is just an error has occurred. any suggestions are very welcome.

I was having this problem - I assumed it was the Apple server being overloaded, so I just kept retrying over the last couple of days. All my apps were upto date, so was Software Update. i tried logging out of the App Store, restarting and so on. No joy.
Anyway, eventually I did this, and it seems to have solved the problem.
Sign out of the App Store (in the Store menu)
Quit the App Store
In Finder - Go>Go to folder... (or Apple-shift-G)
Paste in the following "~/Library/Caches/com.apple.appstore"
It will take you to a folder. Delete the whole folder and empty the trash.
Launch the App Store. Sign in and then reclick the Mountain Lion buy. It won't charge you again. It then started downloading. I'm currently 5% downloaded - but I never got this far before.
Hope this helps!

Duplications in Calendars and Contacts after downloading Mountain Lion

I just recently download Mountain Lion. All of my Calendars information transfered over but much of it is duplicated and information is on the wrong calendar. An example is that all the information that was on my calendar "Life" is now on a different calendar titled "School." My contacts also duplicated many people. What is the issue and whats the best way to fix this?

Resolving duplicate Contacts after setting up iCloud Contacts
Resolving duplicate calendars after setting up your calendar application for iCloud Calendar

I downloaded mountain lion and then the new office suite (word, ppt, excel) but now when I try to display one of my ppt's it says 'ppt cannot open the file...the file may be corrupt, in use, not a type recognized by ppt etc.." how can I fix it?? HELP

I downloaded mountain lion and then the new office suite (word, ppt, excel) but now when I try to display one of my ppt's it says 'ppt cannot open the file...the file may be corrupt, in use, not a type recognized by ppt etc.." how can I fix it?? HELP

Did you try to open teh fle by double-clicking its icon? If the file was made with an older version of Office, you may get that message. Try opeing PP and, from its "File" menu, see if you can open the ppt. I've foundthat often gets around that message and then yo ucan save the file from the newer version.
If that doesn't work, consider asking in the Microsoft Office: Mac forums here:
Office for Mac forums
PowerPoint is not an Apple product and it seems a lot of people around here avoid Office.

I was using OS Snow Leopard and on 8/1/13 I downloaded Mountain Lion and found out it was not compatible with my HP printer (HP photosmart C5580) so I called Apple and asked how to get Mountain Lion off and Snow Leopard back on. The Tech told me to

I was using OS Snow Leopard and on 8/1/13 I downloaded Mountain Lion. Then I found out it was not compatible with my HP Printer (HP Photosmart C5580 all-in-one) so I called Apple support and the tech told me to erase the hard drive instead of going in the time machine. Well I did that and then it took about three hours three days a week for about three weeks on the phone with an apple tech to get all my stuff back on my computer. I have had trouble with my printer (won't do the scan anymore and wasn't printing on my DVDs. Also the computer keeps freezing up when it is in the sleep mode, etc.
When I tried to list my problem on this forum it lists your OS at the bottom and mine had Mountain Lion listed as what I was using so apparently it didn't erase it. Want to know how to get Mountain Lion off and put my Snow Leopard on so things start working right.

Go to the  menu/About This Mac - what OS version shows there?
Do a backup, preferably 2 separate ones on 2 separate drives.
Revert to a Previous OS X
Revert to Snow Leopard
If you do revert, I'd use Setup Assistant to restore your data. This process takes a while, so do it when you won't need the computer for several hours, based on my experience.

Why won't the App Store let me download Mountain Lion even though my system meets the requirements?

I am trying to purchase and download Mountain Lion from the App Store. I have all the requirements met, but I get an error message saying my computer is not compatible. What's up and how do I fix it? Here are 2 screen captures of my system specs:

No way that one will run Mountain Lion.
ntroduced
January 2006 (Shipped February 2006)
Discontinued
May 2006
Model Identifier
MacBookPro1,1
Model Number
A1150

I just downloaded Mountain lion and I kind a wanted to listen to music on my computer screen then to my headphones and I also want to use the dictation Mic output so was wondering if it's at all possible to do those both of the same time, also using the s

I just have just downloaded Mountain lion and I wanted to listen to music on my computer screen with my HDMI cable plug into my back of my screen and I wanted to talk to dictation on my regular standard iPhone headphone and I was wondering if it's all possible change your settings Mac Mini to set it so you can listen to those both like your headphones and use the mic in your headphones and there's no settings that would change in the Mac Mini so do there is a flaw in this system or I am just really really really really dumb.

You computer is probably perfectly repairable, but if you want a new one anyway, it is perfectly possible to transfer the data from the faulty one.
But it would be a mistake to simply put the old HD in the new computer.
These are the steps:
Remove Hard drive from faulty computer. (very easy on Unibody MBPs, do-able but not so easy on older MBPs)
Put it in a cheap enclosure
Connect it the new computer
Boot up new computer.
If the new computer has never been run before the Setup Assistant will ask if you want to import your apps, data, settings etc from either another mac, another HD connected to the Mac or a Time Machine back up.
Obviously chose the second option (another HD connected to this Mac) and follow prompts.
If the new computer has already been run (so Setup Assistant doesn't run when you boot it up), you will need to use Migration Assistant...or run the installer again so that Setup Assistant runs again.
Message was edited by: Mike Boreham...added sec on line

If I download Mountain Lion on my MBP , can I use the same installer file on a different computer and continue the installation without Internet connectivity?

Hi Folks,
I have just downloaded Mountain lion on my Macbook Pro(haven't installed it yet) . My question is, can I copy the same downloaded Mountain Lion from the Applications on to an external hard drive and use the same on a different computer? I am having problems with internet connectivity right now, it would be amazing if it can be installed on the iMac without internet connection.
So is that doable?
Thanks in advance

And the 2nd installation would not require internet connectivity? Except , of course during the set up and the configuration of iCloud and location based services, which I can skip at the time

Is it mandatory to download Mountain Lion in all of Mac PCs

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