how to repair mac startup disk

How to see My Disk Utility on My Mac

1. Choose View > Show All Devices (if available) from the menu bar or toolbar in Disk Utility.
2. 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...

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How do you clean up a Mac startup disk?

How to Clean up Mac Startup Disk

1. Clear Cache. A cache file is a temporary data file created by apps, browsers, and many other programs to help your Mac run faster.
2. Remove Logs. While the Library folder is open, you can also find another type of temporary file – log files. ...
3. Remove Language Resources. ...
4. Delete Downloads. ...
5. Delete Mail Downloads. ...
6. Check Your Trash. ...
7. Delete Old iPhone Backups. ...

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How to fix Startup Disk Full on Mac OS?

• 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 ...
• You may be asked to select a user you know the password for. ...
• From the utilities window in macOS Recovery, select Disk Utility and click Continue.

How to repair a Mac disk with Disk Utility?

How to repair a Mac disk with Disk Utility

• Open Disk Utility. In general, you can just open Disk Utility from the Utilities folder of your Applications folder. ...
• Select your disk in Disk Utility. Choose View > Show All Devices (if available) from the menu bar or toolbar in Disk Utility. ...
• Repair volumes, then containers, then disks. ...

What to do if Your Startup Disk is almost full?

Way #2 Clean Your Mac’s Startup Disk Manually

1. Check Your Storage. You can get a sense of what types of files are taking up your storage space by clicking on the Apple Icon at the top left ...
2. Delete Unused Apps. You are liable to have a number of apps that were once in use but are no longer needed and are just hanging around taking up ...
3. Delete Old iOS Backups. ...
4. Clean Up Your Downloads Folder. ...

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How do I reinstall my Mac startup disk?

Restart your Mac. Choose Apple menu > Shut Down, press and hold the power button until “Loading startup options” appears, select Options, click Continue, then follow the onscreen instructions. In the Recovery app window, select Reinstall for your macOS release, click Continue, then follow the onscreen instructions.

How do you fix a corrupted disk on a Mac?

How to Fix a Corrupted Hard Drive on a MacRepair the Corrupted Hard Drive Using Disk Utility. ... Initiate the FSCK Command. ... Try Free Software to Recover Mac Hard Drive Data. ... Recover from a Time Machine backup drive. ... Hire a hard drive recovery service for Mac. ... 🔌 Shut Down Your Mac Safely. ... ⚡ Prevent Spills and Exposure.More items...•

How do I fix a Mac startup problem?

Try these suggestions.Restart your Mac in safe mode. ... Check your login items to learn if any of them are incompatible.Use the Disk Utility app on your Mac to repair your startup disk. ... Back up your disk, then reinstall macOS.Use macOS Recovery, part of the built-in recovery system of your Mac.

How do I run a disk recovery on a Mac?

Restore a disk using Disk Utility on MacIn the Disk Utility app on your Mac, choose View > Show All Devices. ... In the sidebar, select the volume you want to restore, then click the Restore button . ... Click the Restore pop-up menu, then choose the volume you want to copy.Click Restore, then click Done.

How do you fix a corrupted disk?

You can fix the 'Disk Structure Corrupted and Unreadable' error by:Unplugging and re-plugging the external HDD or USB drive.Uninstalling and reinstalling disk drive.Running hardware and device troubleshooter.Running disk scan for hard drive errors.Running CHKDSK command.More items...•

How do you recover a corrupted hard drive?

Steps to Recover Data from a Corrupted or Crashed Hard DriveDownload and Install Disk Drill for Windows or Mac OS X.Launch Disk Drill recovery software, select the crashed hard disk and click: ... Preview the files you found with Quick or Deep Scan. ... Click Recover to recover your lost data.

Why is there no startup disk on my Mac?

There are several reasons why your Mac may not be able to detect the startup disk. It can be either software or hardware issues. To minimize that possibility, Mac users should run regular maintenance for their Macs to keep top-level performance.

How do I find startup disk on Mac?

Determine which disk started up your MacOn your Mac, choose Apple menu > System Preferences.Click Startup Disk . Your selected startup disk is shown at the top of the preferences pane.

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...•

Where is recovery mode on Mac?

Keep holding until the described behavior occurs. Command (⌘)-R: Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the internet.

How do I know if my Mac hard drive is corrupted?

Signs of a Corrupted External Hard Drive Here are some clear signs that your external hard drive is corrupted: 📄 Your Mac can't read files from it. 💽 Your Mac doesn't recognize the hard drive. 🔒 An error message like “The disk you inserted is not readable” appears.

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 uncorrupt a file on Mac?

How to Open and Repair a Corrupted Word File on MacLaunch the Word on Mac. In the main menu, click on "File" > "Open".Find the drop-down menu titled Enable( Show). Select the option "Recover Text from Any File".Navigate to your corrupted Word file. Follow on-screen instructions to complete the recovery process.

How do I fix a corrupted external hard drive without formatting?

How to fix a corrupted external hard drive WITHOUT formattingOn the desktop, open This PC (My Computer) and select the desired external hard drive. Right-click it and select Properties -> Tools -> Click on Check. ... Use chkdsk.Use Disk Management. ... Use diskpart.

How to repair a Mac that won't start up?

However, if your Mac doesn't start up completely 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 it's connected directly to your Mac using a cable that you know is working correctly. Then turn the drive off and back on again. If your disk still doesn't appear in Disk Utility, your Mac may need servicing. If you need help, please contact Apple Support. Published Date: November 29, 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 has finished checking the volume, ...

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 many volumes does an Apple HDD have?

In this example, the startup disk (APPLE HDD) has one container and two volumes (Macintosh HD, Macintosh HD - Data). Your disk may not have a container and it may have a different number of volumes.

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.

What happens if my Mac startup disk is full?

If your Mac startup disk is still full after following all the steps above, then there are probably lots of hidden system files using up your storage. These files cover everything from essential parts of the operating system to superfluous caches from useless websites.

How to prevent startup disk from getting full?

The best way to prevent your startup disk getting full is by keeping your Mac clean on a regular basis. You can use MacKeeper for this thanks to its Safe Cleanup, Duplicates Finder, and Smart Uninstaller features.

How to delete backups on Mac?

Here’s how: Click the Apple icon and select About This Mac from the top-left of the menu bar. Go to the Storage tab and click Manage. From the sidebar, select iOS Files to view all your iOS and iPadOS backups. Select any backups you don’t want to keep, then click Delete to get rid of them. 4.

What does it mean when your Mac says "Your disk is almost full"?

If your Mac popped up with a “Your disk is almost full” message, it was almost certainly referring to your Mac’s startup disk. The startup disk is the hard drive or SSD that holds the operating system for your Mac. For most people, this is the built-in drive on their Mac. And unless you set up an external drive, ...

How to see what apps are installed on Mac?

Open Finder and select Applications from the sidebar to view all the apps installed on your Mac. Take a look through the list to see if there are any apps you don’t use anymore, which you can uninstall to create more free space.

How to free up space on startup?

It’s time to clear out some of that space. Here are all the best methods you can use to free up your startup disk. 1. Empty the Trash and Downloads folder.

Why is there a lot of duplicate files on my Mac?

This sometimes happens due to software bugs that copy files in the background, but it can also happen as a result of user error.

How to check for errors on a disk?

Start by selecting the last volume on the disk, then click the First Aid button. Click Run or Repair Disk to check the volume for errors. If you can't click the button, skip this step for the volume you selected. After Disk Utility has completed the check, select the next volume or container above it in the sidebar, then run First Aid again.

What is disk utility?

Disk Utility is Apple's go-to macOS app for finding and repairing common disk errors, but if it's your Mac's internal disk that's the problem, then your Mac might not even start up into macOS. Fortunately, in such cases you can still get to Disk Utility from macOS Recovery. On Intel-based Macs, pressing the Command-R key combination immediately on ...

What OS is used in Mac 2021?

Friday March 12, 2021 3:51 pm PST by Tim Hardwick. Macs powered by Apple silicon, such as the M1 MacBook Pro, can run both iOS apps and Mac apps, but they can also run x86-64 software that's been built to work on Intel architecture, thanks to something called Rosetta 2. Rosetta 2 is the translation layer that enables a Mac with Apple silicon ...

Does erasing a Mac delete all files?

Note that erasing your Mac permanently deletes all files on it, so follow the backup advice carefully. If you plan to give away, sell, or trade in a Mac, erasing your Mac should be the final step. First, Back Up Your Data Before you do anything, you should back up the files on your Mac. You ... Read Full Article.

Part 1. What is a Startup Disk on Mac?

Just like every other operating system, Mac also lets us manage its storage via different disks and partitions. Most of these partitions and disks store all kinds of user data. Though, the disk that stores macOS and other system components are known as the startup disk.

Part 2. What is Taking up Space on Mac Startup Disk

In order to learn how to fix startup disk full on MacBook Pro, Air, and other models, you need to diagnose the problem first. It is recommended to visit Mac's storage settings and know what kind of data is taking so much space on the startup disk. Ideally, the data should not consume more than 75-80% part of the total space.

Part 3. Four Ways to Show Hidden Files on Mac

Your Mac's startup disk is full and now you can't seem to use your system the usual way. Don't worry – there are all sorts of solutions to fix startup disk full on Mac. By visiting Mac's storage settings, you can already know what kind of data is accumulating so much space on Mac.

Part 4. How to Recover Lost Files on Mac

Chances are that while fixing the startup disk full, you could have ended up deleting some of your important files in the process. In this case, you can take the assistance of Recoverit Data Recovery for Mac to retrieve the lost or deleted content. The application is developed by Wondershare and provides a holistic data recovery solution.

Part 5. How to Prevent Almost Full Mac Startup Disk

The guide has already listed steps to clear the startup disk full on Mac and make more free space on it. Though, if you don't want to encounter issues like MacBook slow startup, then you should take the following preventive measures.

How to backup Mac to external drive?

All you have to do is plug-in an external storage drive of a size larger than your startup disk. The steps are as follows: Step 1. Connect the external drive to Mac. Step 2. Then, go to System Preferences and launch Time Machine. Step 3. Specify the device to be used for Time Machine backup on macOS Catalina. Step 4.

Can I repair my Mac's SSD?

If your MacBook is running slow after Catalina 10.15 upgrade or your iMac is crashing, then don't hesitate to fix your Mac’s in-built storage drive (SSD or HDD).

Simple Troubleshooting Methods for Our Mac

Before moving into more in-depth troubleshooting methods, let’s take a look at some of the simple and easy stuff that we can do.

Scenario 2 How to Fix Your Mac It if Boots up to a Blank Screen

If you boot up your Mac and you see a blank screen, this is most likely the result of either a hardware or software issue and we can attempt to fix it by following the steps below.

Repair Method 1: Running Disk Utility

If you were able to get your Mac to boo into Recovery mode, you will want to use Disk Utility to repair your hard drive.

Repair Method 2: Recovery Mode

If after using Disk Utility your Mac will still not start up, then it is time to boot your Mac into Recovery mode. Within Recovery mode, we can reinstall macOS.

Saving Your Data From Your Mac

Hopefully, your Mac is now running. If this is the case, it would be best to recover the data from your Mac and put it onto another device. Since our Mac was having issues booting, it could be the result of either a hardware or software issue which if this is the case, could cause further loss of data.

Conclusion

Most of the time, our Macs boot fine with no issues. However, hardware and software issues can occur, and when they do and it’s best to know how to solve them and recover our data.