I can not change background mountain lion from the Finder

Hi, my problem is:
when I boot the pc I can change screen-> right click-> change desktop background.
But later if I want to change it again this does not answer. If I try twice changes the background
I do not know if the problem is my computer or failure of mountain lion. In Lion or Snow didn´t happen.

Are you using an external display? I've had this happen with an external display. I reset PRAM and all was sell.
Bryan

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Can't download OSX mountain lion from the app store

I keep trying but the download wheel starts to spin then nothing...
No downoad or instructions. ANy one else having this problem?

It would help to know which one of the 9 different models of MacBook you have. To see which model you have go to the Apple in the upper left corner and select About This Mac, then click on More Info. When System Profiler comes up check the Model Identifier and post it back here.

My iMac came with mountain Lion preinstalled. I wish to make a Bootable USB Disk. I find that I am not allowed to d/load Mountain Lion from the App Store. I wish to make a purchase. Why can't I?

My iMac came with Mountain Lion preinstalled. I wish to make a Bootable USB Disk.
I find that I am not allowed to d/load Mountain Lion from the App Store.
I wish to make a purchase. Why can't I?
Ezra

All he needs is the recovery disc assistant. It's a free download.
OS X: About Recovery Disk Assistant
http://support.apple.com/kb/ht4848

Everytime I try to purchase Mountain Lion from the App Store it tells me that iTunes has changed their terms and agreements and I need to first read and agree to them before I can proceed. It never pulls up the terms and agreement window to read?

Everytime I try to purchase Mountain lion from the App store it tells me that iTunes has changed their terms and agreements, in order to proceed I need to read and agree to them, yet no pop up window appears to do just that!!

http://www.apple.com/support/mac/app-store/contact.html?form=account

I have installed the most recent version of Snow Leopard on my MAC, and I am trying to install Mountain Lion from the Apple Store. It will not install, because it says I do not have 2GB of memory, even though I have over 200GB available. Please help.

I have installed the most recent version of Snow Leopard on my MAC, and I am trying to install Mountain Lion from the Apple Store. It will not install, because it says I do not have 2GB of memory, even though I have over 200GB available. Please help.

Welcome to the Apple Support Communities
One thing is the memory, and another thing is the hard disk space. You are telling me that you have 200 GB of free space on the hard disk, but the App Store is telling you that you have to install 2 GB of memory or more on your Mac if you want to upgrade to OS X Mountain Lion.
First of all, open  > About this Mac > More Info, and copy "Model Identifier" here, so we can know what Mac you have got and how much memory you can install.
We recommend to buy the memory in OWC or Crucial (Crucial is cheaper and offers the same compatibility warranty as OWC) because you won't probably have any problem with the memory you buy there

TS1702 how do i delete from the startup disk? I am trying to get Mountain Lion from the App store and it says that the purchase was not complete because i need 4.06 GB space to download OS x 10.8. and to remove items from my startup disk to increase space

how do i delete from the startup disk? I am trying to get Mountain Lion from the App store and it says that the purchase was not complete because i need 4.06 GB space to download OS x 10.8. and to remove items from my startup disk to increase space. How?
Thanks

You can use iCloud with 10.7.5. You do not need to upgrade to Yosemite. You should provide a minimum of 15 GBs of free space or 10% of the hard drive's capacity, whichever is greater.
Freeing Up Space on The Hard Drive
1. See Lion/Mountain Lion/Mavericks' Storage Display.
2. You can remove data from your Home folder except for the /Home/Library/ folder.
3. Visit The XLab FAQs and read the FAQ on freeing up space on your hard drive.
4. Also see Freeing space on your Mac OS X startup disk.
5. See Where did my Disk Space go?.
6. See The Storage Display.
You must Empty the Trash in order to recover the space they occupied on the hard drive.
You should consider replacing the drive with a larger one. Check out OWC for drives, tutorials, and toolkits.
Try using OmniDiskSweeper 1.8 or GrandPerspective to search your drive for large files and where they are located.

I have downloaded mountain lion from the app store on another computer. I have then gone to find it in "purchases" in the app store on my own macbook pro and it just comes up as "you have not purchased any apps" how to I get my mountain lion?

I have downloaded mountain lion from the app store on another computer. I have then gone to find it in "purchases" in the app store on my own macbook pro and it just comes up as "you have not purchased any apps" how to I get my mountain lion?

Mac App Store: Hiding and unhiding purchases
http://support.apple.com/kb/HT4928

I have downloaded OS X Mountain Lion from the App Store. It took two hours to download but now its not running and I have no idea how to make it run!

I have downloaded OS X Mountain Lion from the App Store. It took two hours to download but now its not running and I have no idea how to make it run!
Download was complete and I accepted everything and restarted computer but its still running 10.7.5
Any idea how to get OS X Mountain Lion to run?

What you donwloaded was the OS installer. You still have to do the installation.
To get started, double click on the download, then double click again and follow instructions.

HT1338 Dear all, I have just bought a MacBook pro with osx lion on 25thast month. I wanted to know if I can use the methods described above to update to osx mountain lion or I have to buy osx mountain lion from the app store?

Dear all, I have just bought a MacBook pro with osx lion on 25th last month. I wanted to know if I can use the methods described above to update to osx mountain lion or I have to buy osx mountain lion from the app store?

Here are the rules to qualify for the free upgrade:
http://www.apple.com/osx/uptodate/
(has to be purchased from Apple or authorized reseller).

Can I upgrade to Mountain Lion from 10.6 on a 24" 2009 Imac?

Can I upgrade to Mountain Lion from 10.6 on a 24" 2009 Imac? The instructions say my computer is capable. Do I have to go through Lion or Snow Leopard first?

nope you can go right from SL to ML.
Message was edited by: shldr2thewheel--oh wait, you can't go from 10.5.8 right to 10.8 since you need access to the app store. I thought you already had 10.6 installed.

I can't download Mountain Lion from the App Store; it tells me that the product distribution file cannot be verified. What can I do?

I can't download Mountain Lion from the App Store; it tells me that the product distribution file cannot be verified. What does that mean, and what can I do?

Try starting in safe mode, holding the Shift key while your computer is starting. After starting in safe mode, open the App Store and download Mountain Lion

How do you erase and reinstall a hard drive without a disc? I bought this mac book pro under a year ago and am pretty sure i downloaded mountain lion from the app store. Basically Im having startup issues and this is the final step Ive reached

when I start my laptop it loads a third of the way and shuts down automaticallyI've tried to safe boot, repairing discs and clearing RAM but nothing has worked. basically I've come to the final step of having to a erase my hard drive and reinstall mountain lion however Apple support suggest that I install from a disc however I installed mountain lion from the App Store. can anyone help me go about this?

Install or Reinstall Lion/Mountain Lion from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard 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.
Erase the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After DU loads select your startup volume (usually Macintosh HD) from the
      left side list. Click on the Erase tab in the DU main window.
3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
        the Security button and set the Zero Data option to one-pass. Click on
      the Erase button and wait until the process has completed.
4. Quit DU and return to the main menu.
Reinstall Lion: Select Reinstall Lion/Mountain Lion and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
            because it is three times faster than wireless.

Creating my own Fusion Drive: Do I need to buy Mountain Lion from the app store to reinstall the OS? Do I lose the iLife apps?

I just bought a Mac Mini (late 2012) with a 1TB HDD and I'm planning to install a second drive, an SSD (Samsung 840 evo) and create the Fusion Drive, and I have a couple of questions:
1- I've read lots of articles on how to do this but I'm not sure if I have to buy Mountain Lion from the app store (to reinstall the OS after I install the second drive) since I'm not able to see it on the "Purchased" list of apps, or if I can just reinstall OS X with OS X Utilities.
2- I read somewhere that if I make my own Fusion Drive when I reinstall OS X I will lose iLife, is this true? Or will I be able to redownload it from the store? I really don't want to lose iMovie, iPhoto and GarageBand and I'm confused about it.
Thanks in advance for any help and information you can give me!

Thankyou very much lllaass, that's exactly what I wanted to be sure about!

Unable to download Mountain Lion from the App store

Hi, when I try to download Mountain Lion from the app store I get the message, " The product distribution file could not be verified ... " Obviously I'm doing something really stupid. Advice welcome!
Thanks

A belated thanks for your help. I'd never have solved it otherwise. Maybe Apple could change the automatic reply that I got initially ("The product distribution file could not be verified ....") othewise they risk loosing customers.
Thanks again.

Redownloading OS X Mountain Lion from the App Store

Hi,
i need to re-download OS X Mountain Lion from the App Store, but cannot find the download. Trying to use my redeem code from the OS X Developer Programms tells me that the software is not available.
How can i redownload the DMG to install Mountain Lion again ?
Cheers,
Oliver

The redemption code can only be used once. If you downloaded Mountain Lion already, then in App Store sign in with the proper Apple ID. Click on the Purchases icon. Search the list for your download. If you don't see it then it may be hidden: Mac App Store- Hiding and unhiding purchases.
If you are trying to download beta software, then:
Please don't post here about beta software. There are confidential forums set aside for developers to use. Developer Forums. If you are a paid developer or seed tester then it's a violation of your NDA to post in these forums. If you aren't a developer or seed tester then you have an illegal copy.

I can not change background mountain lion from the Finder

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