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.
- MacBook Air (M1, 2020) MacBook Air (Retina, 13-inch, 2020) MacBook Air (Retina, 13-inch, 2018 - 2019).
- I have a Mac Mini that i would like to reload Mac OS on to give it a fresh new start. I've looked up how to boot into the macOS Utilities with the Command + R and also the other combinations and none seem to work. After the chime i have held in the combination but no Apple logo shows up or getting into the utilities.
From useful utilities to handy archivers and transcoders, here are 35 free yet powerful macOS apps you can download today. But users on 10.14 can download a version for their Mac too on Apple. Mac Apps for Utilities & Operating Systems Whether you want to optimize your system's productivity or your own, utilities should be in your toolbox. Update your OS, clear out junk files on your. Afloat is a free Mac utility—only available for the Leopard and Snow Leopard platforms—that not only lets you resize windows with ease, but also adds extra window functionality that you won't find.
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. That should get Mountain Lion working again without damaging the rest of your files.
Oct 30, 2013 8:56 AM
Disk Utility can find and repair errors related to the formatting and directory structure of a Mac disk. Errors can lead to unexpected behavior when using your Mac, and significant errors might even prevent your Mac from starting up completely.
Before proceeding, make sure that you have a current backup of your Mac, in case you need to recover damaged files or Disk Utility finds errors that it can't repair.
Open Disk Utility
In general, you can just open Disk Utility from the Utilities folder of your Applications folder. However, if your Mac doesn't start up all the way, or you want to repair the disk your Mac starts up from, open Disk Utility from macOS Recovery:
- Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:
- Apple silicon: Turn on your Mac and continue to press and hold the power button until you see the startup options window. Click the gear icon labeled Options, then click Continue.
- Intel processor: Turn on your Mac, then immediately press and hold these two keys until you see an Apple logo or other image: Command (⌘) and R.
- You may be asked to select a user you know the password for. Select the user, then click Next and enter their administrator password.
- From the utilities window in macOS Recovery, select Disk Utility and click Continue.
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Select your disk in Disk Utility
Choose View > Show All Devices (if available) from the menu bar or toolbar in Disk Utility.
The sidebar in Disk Utility should now show each available disk or other storage device, beginning with your startup disk. And beneath each disk you should see any containers and volumes on that disk. Don't see your disk?
In this example, the startup disk (APPLE HDD) has one container and two volumes (Macintosh HD, Macintosh HD - Data). Your disk might not have a container, and it might have a different number of volumes.
Repair volumes, then containers, then disks
For each disk that you're repairing, start by selecting the last volume on that disk, then click the First Aid button or tab.
In this example, the last volume on the disk is Macintosh HD - Data.
Click Run to begin checking the selected volume for errors.
- If there is no Run button, click the Repair Disk button instead.
- If the button is dimmed and you can't click it, skip this step for the disk, container, or volume you selected.
- If you're asked for a password to unlock the disk, enter your administrator password.
After Disk Utility is done checking the volume, select the next item above it in the sidebar, then run First Aid again. Keep moving up the list, running First Aid for each volume on the disk, then each container on the disk, then finally the disk itself.
In this example, the repair order is Macintosh HD - Data, then Macintosh HD, then Container disk3, then APPLE HDD.
If Disk Utility found errors that it can't repair
Macbook Utilities
If Disk Utility found errors that it could not repair, use Disk Utility to erase (format) your disk. Apple computer movie.
If your disk doesn't appear in Disk Utility
Apple Mac Utilities Downloads
If Disk Utility can't see your disk, it also can't see any containers or volumes on that disk. In that case, follow these steps:
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- Shut down your Mac, then unplug all nonessential devices from your Mac.
- If you're repairing an external drive, make sure that it's connected directly to your Mac using a cable that you know is good. Then turn the drive off and back on.
- If your disk still doesn't appear in Disk Utility, your Mac might need service. If you need help, please contact Apple Support.