To fix the macOS Base System full problem:
- On the macOS installer window, click Utilities on the top-left menu bar and choose Disk Utility.
- Select the main container under the name like VMware Virtual SATA Hard Drive Media and click Erase.
- Name the partition, select APFS as Format for Mac running macOS 10.13 High Sierra or later. ...
- Tap on Erase. ...
Full Answer
What is the use of base system in macOS?
macOS Base System is the recovery partition on your Mac, which allows you to reinstall macOS when your system fails to operate, or a different macOS version needs to be installed. It also helps you troubleshoot and solve Mac problems with Disk Utility, go back to a previous state by restoring from Time Machine.
How to repair hard drive on Mac OS X?
In OS X Recovery, click the “Disk Utility” shortcut to launch the Disk Utility here. Select the drive or partition you need to repair and click the “First Aid” button. The Disk Utility interface is the same one you’ll see on your Mac OS X desktop, but run it from here and it’ll be able to repair problems with your system drive.
How to restore Macintosh HD to OS X Base System?
Help, restored Macintosh HD to OS X Base System. 1 • Then exit driver utilities. 2 • Enter Reinstall MacOS Sierra or Reinstall OS X. 3 • Then Select the Macintosh HD drive. 4 • Reinstall MacOS Sierra or Reinstall OS X.
Why is the base system not working on my Mac?
Common problem users come across when trying to use the macOS Base System is the Disk Locked error. It happens when the Base System which should only have a Disk Image of around 2GB is mirroring the hard drive size and showing the error. Usually, it takes place when you accidentally restore your Macintosh HD to the base system.
How do I restore macOS X base system?
Shut down your Mac as usual, and wait a few moments to ensure it's completely shut down. Hold down the power button until "Loading startup options" appears. Select Options, then press Continue. Select Volume to recover if asked and enter a password if asked.
How do I fix a corrupted macOS X?
0:142:19Fix This Copy of the Install MacOS Application is Damaged - YouTubeYouTubeStart of suggested clipEnd of suggested clipPassword. Once you have it unlocked. Take the tick out of set date and time automatically. Set yourMorePassword. Once you have it unlocked. Take the tick out of set date and time automatically. Set your time back to just after the release date of the version of mac os you are trying to install.
How do I do a system repair on my Mac?
Restart your Mac, and press Command + R, while it's restarting. Select Disk Utility from the macOS Utilities menu. Once Disk Utility has loaded, choose the disk you wish to repair - the default name for your system partition is generally "Macintosh HD", and choose 'Repair Disk'.
Can you fix corrupted hard drive?
You can fix a corrupted hard drive by running the CHKDSK command in Command Prompt. Caution: The CHKDSK command known for scanning and repairing drive, allow to use /f and /r attributes to fix the corruption in the hard disk.
Why is my macOS installer damaged?
The cause of this error is an expired certificate, and because the certificate is expired, the “Install macOS” app for Mojave, Sierra, and High Sierra will not run. Fortunately, there is a fairly simple solution to the “damaged” installer problem. Below are the download links for the recent versions of macOS.
How do I fix my Mac that won't boot up?
On a Mac laptop:Shut down the MacBook.Unplug and then reconnect the power cable.Press Shift + Ctrl + Option/Alt keys and the power button at the same time.Now release all those keys and the power button at the same time.You may see the light on the power cable flicker.Restart your MacBook.
How do I boot into recovery mode?
Press and hold down the Volume Down button and keep holding it, then press and hold the Power button as well for a few seconds, and let go when you see the Android mascot on its back on screen.Use the Volume Down button to cycle through the options until you find Recovery mode and press the Power button to load it.More items...•
How do I fix a corrupted external hard drive without formatting Mac?
How to Recover Files From an External Hard Drive Without FormattingDownload and install Disk Drill. ... Ensure your drive is plugged into the computer. ... When the scan has finished, click Review found items.Scan the recoverable data for any items you want to recover. ... Specify where you want to recover the files.More items...•
How do I use fsck on Mac?
To boot into Single-User mode, start your Mac in macOS Recovery and choose Utilities > Terminal. This procedure applies to both Intel and M1 Macs. (Wherein “f” means that it'll force the utility to check the drive file system, and “y” means it'll automatically confirm the actions of fsck command.)
How do I run First Aid from recovery on my Mac?
Repair a storage device in Disk Utility on MacIn the Disk Utility app on your Mac, choose View > Show All Devices. ... In the sidebar, select a volume, then click the First Aid button .In the First Aid dialog, click Run, then follow the onscreen instructions.When the First Aid process is complete, click Done.More items...
Why does my Mac say corrupt image?
The data in a disk image can be corrupted if a problem occurs while it's being copied or if someone modifies it. You can see whether a disk image's data has been corrupted by verifying its checksum, which is a calculation of all of its data.
1. Can I delete the macOS Base System?
No, You can't delete macOS Base System, nor you should. It is what gives you access to the macOS Utilities installed in the recovery partition. Wit...
2. Should I erase the macOS Base System?
You may wonder whether you should erase the macOS Base System when you are trying a clean reinstallation of Mac operating system or to resale your...
3. What is stored in the macOS Base System?
macOS Base System is the base of the Mac operating system, everything needed to keep your Mac running. It allows you into the recovery partition an...
How to repair a Mac that won't start up?
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 ...
How to repair an external drive on 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. Published Date: November 17, 2020.
How to repair disk if there is no run button?
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 ...
What to do if disk utility found errors that it can't repair?
If Disk Utility found errors that it can't repair. If Disk Utility found errors that it could not repair, use Disk Utility to erase (format) your disk.
How to open disk utility on Mac?
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: 1 Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:#N#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.#N#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. 2 You may be asked to select a user you know the password for. Select the user, then click Next and enter their administrator password. 3 From the utilities window in macOS Recovery, select Disk Utility and click Continue.
How to enter administrator password on Mac?
You may be asked to select a user you know the password for. Select the user, then click Next and enter their administrator password.
Entering macOS Recovery
macOS Recovery has tools at its disposal that allow you to diagnose problems with your Mac's hard drive, reinstall macOS, and restore from a Time Machine backup. You can enter Recovery by pressing certain key combinations.
How to check your startup disk with Disk Utility in macOS Recovery mode
The first thing you'll want to do is make sure your Mac's startup disk is healthy. You'll need to use Disk Utility to do that.
Questions?
If you have any more questions about reinstalling macOS on your Mac, let us know in the comments.
What is macOS Base System?
macOS Base System is the recovery partition on your Mac, which allows you to reinstall macOS when your system fails to operate, or a different macOS version needs to be installed. It also helps you troubleshoot and solve Mac problems with Disk Utility, go back to a previous state by restoring from Time Machine.
macOS Base System Vs. Macintosh HD
Macintosh HD is what you normally boot into when you turn on the Mac, where the macOS resides. macOS Base system is a separate volume that allows you to restore macOS to your Mac with a few clicks when macOS doesn't work as expected. It's a backup for users to repair their Mac, reinstall macOS and use other low-level utilities.
macOS Base System being the Only Disk Available
Due to incorrect operations, you may accidentally lose main volumes like Macintosh HD and find macOS Base System the only disk available to store the macOS installer. When you tap on the macOS Base System, you may experience errors indicating a locked drive or no enough space.
FAQ about macOS Base System
No, You can't delete macOS Base System, nor you should. It is what gives you access to the macOS Utilities installed in the recovery partition. Without it, you can't reinstall operating systems or fix problems when your Mac fails to boot up.
What happens when you install MacOS from recovery?
When you install macOS from Recovery, you get the current version of the most recently installed macOS, with some exceptions: On an Intel-based Mac: If you use Shift-Option-Command-R during startup, you're offered the macOS that came with your Mac, or the closest version still available.
What to do if Mac installs won't install?
If the installer asks to unlock your disk, enter the password you use to log in to your Mac. If the installer doesn't see your disk, or it says that it can't install on your computer or volume, you might need to erase your disk first.
How to get Apple logo on Mac?
Make sure that your Mac has a connection to the internet. Then turn on your Mac and immediately press and hold Command (⌘)-R until you see an Apple logo or other image.
What happens if you use option command R?
If you use Option-Command-R during startup, in most cases you're offered the latest macOS that is compatible with your Mac. Otherwise you're offered the macOS that came with your Mac, or the closest version still available.
