• I have connected it to wifi and am trying to install OS X by using the reinstall option but when I log in to the App Store it just says item temporarily unavailable. It seems to have decided that El Capitan 10.11 is what its looking for but cannot access it to download it.
• I know, this is an old comment, but I finally downgraded back to El Capitan last night by using the Internet Recovery route. Wi-fi didn’t work, so I connected an ethernet cable from my MacBook Pro (mid-2012) to the router, and I got connection. It gave me Mountain Lion, and then I was able to upgrade to El Capitan.
• Download: OS X El Capitan This will be downloaded as a disk image named InstallMacOSX.dmg. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It will install an app named Install OS X El Capitan into your Applications folder.
• The option to Erase popup in El Capitan. Once erased, exit Disk Utility. Step 6: Reinstall OS X. Click the Reinstall OS X option in the menu and proceed to follow the directions. You will need to be connected to the Internet, so make sure you're plugged in via Ethernet, or are connected to a Wi-Fi network.

The recovery menu offers to install Lion mac os, but it fails with message 'This item is temporarily unavailable. Please try again later' or smth like that and I'm stuck with no mac os x. I have another macbook laptop, which has tiger 10.4 operating system and I can't make a bootable usb with that old mac because it doesn't support most of the.

You must repartition the drive and remove all traces of the prior owner. If the MBA came with Lion or later pre-installed then do this:

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1. Restart the computer. Immediately after the chime hold down the Command-Option-Rkeys until a globe appears.
2. The Utility Menu will appear in from 5-20 minutes. Be patient.
3. Select Disk Utility and click on the Continue button.
4. When Disk Utility loads select the drive (usually, the out-dented entry) from the side list.
5. Click on the Erase tab in Disk Utility's main window. A panel will drop down.
6. Set the partition scheme to GUID.
7. Set the Format type to Mac OS Extended (Journaled.)
8. Click on the Apply button, then click on the Done button when it activates.
9. Quit Disk Utility and return to the Utility Menu.
10. Select Reinstall OS X and click on the Continue button.

If it came with Snow Leopard or earlier pre-installed then do this:

Snow Leopard Erase and Install

If possible be sure to back up your files.

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1. Insert Snow Leopard DVD into the optical drive and restart the computer.
2. Immediately upon hearing the chime hold down the C key.
3. Release the key when the Apple logo appears and wait for the loading to finish.
4. After the installer loads select your language and click on the Continue button. When the menu bar appears select Disk Utility from the Utilities' menu. After Disk Utility loads select the out-dented disk entry from the side list (mfgr.'s ID and drive size.) Click on the Partition tab in the Disk Utility’s right window. Set the number of partitions to one (1) from the drop down menu. Click on the Options button and select GUID, click OK button, set the format type to MacOS Extended, Journaled. Finally, click on the Apply button.
5. After formatting has finished quit Disk Utility. Continue with the OS X installation and follow the directions.
6. When the installation has finished the computer will restart into the Setup Assistant. After you complete the Setup Assistant you will be running a fresh installation of Snow Leopard. Open Software Update and install the recommended updates.
7. If you are planning to sell or give your computer away, then do the following: After you reformat your hard drive and reinstall Snow Leopard, the computer restarts to a Welcome screen. To leave the Mac in an OOTB (Out Of The Box) state, don't continue with the setup. Instead, press Command and Q keys to shut down the computer. The Setup Assistant will guide the new owner through the setup process after he/she turns on the computer.
8. Download and install Mac OS X 10.6.8 Update Combo v1.1. You can then download and install your own copy of El Capitan or Sierra.

Mar 17, 2017 7:59 PM

Cedesktop exe wince 6 0 download. Mac 911 is a place you can come with no judgement, even if you managed to erase your Mac’s startup disk and you’re not sure what to do next. It happens! (In the spirit of confession, I managed to delete the core operating system off my first Unix system in 1994, because I thought, “This file takes up too much space!”)

Fortunately, Apple has you covered with macOS Recovery. You may know this tool, introduced way back in Mac OS X 10.7 Lion, as a way to start up your computer to run Disk Utility without having your startup drive mounted, to reinstall macOS, and for a number of other technical purposes.

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macOS Recovery occupies a small, invisible partition on your startup drive, and lives quietly there until you need it. But what happens if you erase the entire drive, including this hidden partition?

Macs can reach out over the internet and bootstrap themselves back into operation, as the Mac firmware—software built into a Mac that’s persistent and isn’t dependent on the operating system being installed—knows how to connect to the internet and reach Apple’s servers.

Start up your Mac from a shut down state or restart it, then immediately hold down Command-R. The Mac should recognize that there’s no macOS Recovery partition installed, show a spinning globe. You should then be prompted to connect to a Wi-Fi network, and you enter a password.

At this point, the Mac should start to download the recovery files from the internet and show a status bar. When complete, it should reinstall macOS Recovery and reinstall macOS on the main partition. (If your main macOS partition had system files become damaged or missing, your other files will remain intact, as this reinstallation only installs and replaces system files and apps.)

Command-R should reinstall the latest version of macOS that you had previously installed on this computer. However, you have other keystroke options depending on which version was previously installed.

Apple changed the start keys with macOS Sierra version 10.12.4. If you have ever installed that version on your Mac, no matter what version (or no version) is currently installed, you have these options.

• Command-Option-R: Upgrade to the latest version of macOS that works on your Mac, which may not be the very latest release of macOS for older Macs.
• Command-Shift-Option-R: Reinstall the version of macOS that your Mac shipped with.

With older versions of macOS:

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Trying To Reinstall Os X El Capitan This Item Is Temporarily Unavailable

• Command-Option-R: Reinstalls the version of macOS that your Mac shipped with.

This Mac 911 article is in response to a question submitted by Macworld reader Luke.

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