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It sounds like the download may not have failed but the installation did so the only thing left that your MBP can boot from is the Recovery partition (see this discussion). Since you don't want to loose all your documents and you don't have a backup to restore from, I can think of a few things to try.
Disk Utility is in the Utilities folder inside the main Applications folder. It is also available on Mac OS X software installation CDs and DVDs, and, in Mac OS X 10.7 (Lion) or later, on your Recovery HD volume. For more about using Disk Utility, from Disk Utility's Help menu, select Disk Utility Help. I recently sold my MacBook Air 2008 and was trying to reset it. Now I cant get out of Mac OS X Utilities. It gives me the option to 'Restore from time machine backup', 'Reinstall Mac OS X', 'Get help online' or 'disk utility'. The OS X Utilities screen, rather than your own desktop, signifies you've booted into your Mac's recovery partition. There's four distinct options here for recovery, re-installation or support. What you choose here depends on your specific situation.
- Eventually, you’ll end up on a screen headlined OS X Utilities. (Once you see that screen, you can release the keys you were holding down.) Click on Disk Utility. Then, click on your Mac’s.
- How to fix Mac boot-up problems in Recovery Mode. By MacLife How To. OS X Utilities. When Recovery finishes loading, it displays a list of four commonly needed tasks.
- The OS X recovery utilities includes access to Disk Utility for managing storage volumes. You can select an internal drive from the list in the left pane and then do anything you would normally do with Disk Utility inside OS X, including repairing your disk in the First Aid tab.
- The Best Free Utilities & Operating Systems app downloads for Mac: Disk Drill Free Mac Data Recovery StuffIt Expander Apple Mac OS X El Capitan OmniDi. Utilities & Operating Systems for Mac.
Reboot and hold down the option key to see what the MBP sees as bootable. If it's just the Recovery partition, that's where you are.
If there's a second choice (e.g., Macintosh HD), and it doesn't boot from that, try to reboot and hold down the shift key to start in Safe Mode.
Getting more extreme would be to get an external drive and Reinstall OS X on it so that you can boot from it and copy over your documents from the internal drive using Setup Assistant.
FInally, you could reinstall OS X on the internal. Visio network mapping tool. That should get Mountain Lion working again without damaging the rest of your files.
Our prior tutorials educated you on the ways to start up your Mac from a bootable media, pick a startup disk at boot time or after the fact, mount another Mac’s startup drive on your desktop in Target Disk Mode and boot your computer in Safe Mode or Verbose Mode.
macOS’ startup modes can be quite helpful for, among other things, troubleshooting complex issues that might require more than fixing disk permissions.
On the downside, the aforesaid startup modes aren’t very helpful if the startup disk has become corrupted or damaged.
Thankfully, macOS’ Recovery Mode provides the tools you need to solve these problems and is your last chance to repair the startup disk, reinstall macOS or restore from a backup after a fatal failure that prevents your Mac from starting up properly.
In this tutorial, you’ll learn how to enter Recovery Mode at boot time and use the built-in recovery tools to bring your Mac in perfect working condition.
What is Recovery Mode
Recovery Mode is a special mode that loads macOS’ built-in recovery tools from a special disk partition that holds a recovery image along with a copy of the macOS installer.
Mac Os X Utilities Options
If your Mac cannot be recovered in any other way, use Recovery Mode to diagnose disk problems, get help online or install the version of macOS that previously ran on this Mac.
Use Recovery Mode to:
Tip: If the recovery partition itself is damaged and you cannot use Recovery Mode, enter Internet Recovery Mode by pressing Command (⌘) – Option (⌥) – R at boot time.
How to enter Recovery Mode
1) In the Apple menu choose Restart, or power on your Mac.
2) As your Mac restarts, hold down the Command (⌘) – R combination immediately upon hearing the startup chime. Hold the keys until the Apple logo appears.
Tip: If you own a Mac notebook, press the keys on its built-in keyboard as the keystroke might not register on external keyboards.
After a few minutes, the macOS Utilities window will appear.
If you see a login window or your own desktop, you didn’t press the keyboard combination early enough and have booted in regular macOS mode. Restart your Mac and try again.
Standard Recovery vs. Internet Recovery
Internet Recovery basically starts up your Mac directly from Apple’s servers and performs a quick test of its memory and hard drive to check for hardware issues. If the boot sector is missing on the startup volume, or the recovery partition itself has become damaged or corrupted, your Mac will automatically enter Internet Recovery Mode.
To enter Internet Recovery manually, restart or power on your Mac and hold down the Command (⌘) – Option (⌥) – R after hearing the startup chime. Release the keys after the animated globe appears on the screen.
“Starting Internet Recovery,” reads a message. ”This may take a while.”
You will be asked to connect to a wireless network unless your Mac is already connect to the Internet via Ethernet. Internet Recovery requires a network connection because it needs to go online and download a recovery system image from Apple’s servers.
After the recovery image has been successfully downloaded, Internet Recovery will start up your Mac from it and present you with the same options as standard Recovery Mode, with one crucial difference: choosing to reinstall macOS in Internet Recovery Mode will download a version of macOS from Apple’s server that was factory-preloaded on your computer at the time of purchase, not the latest version you updated to through the Mac App Store.
Reinstalling macOS in standard Recovery Mode, on the other hand, will install a version of macOS that was last installed on this Mac. Standard Recovery Mode gets the macOS Installer image file from a local recovery partition on your Mac.
RELATED:Things to know about OS X Internet Recovery Mode
Other options in Internet Recovery are the same as in standard Recovery Mode: you can use Disk Utility to fix errors on any connected drive, get help online in Safari and restore your Mac from a Time Machine backup.
Internet Recovery is supported on newer Macs with OS X Lion or later.
Related tutorials
Check out these resources that cover a myriad of ways you can start up your Mac:
For even more how-tos, browse our complete archive of Mac tutorials.
Macos Utilities Disk Utility
Need help? Ask iDB!
Not sure how to do certain things on your Apple device? Let us know at help@iDownloadBlog.com and our future tutorials might cover your specific problem and provide a solution.
Mac Os X Utilities Download
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