How do I fix software problems on my Mac?

How To Fix Common Mac Problems

1. Reboot Mac.
2. Reset PRAM/NVRAM.
3. Boot into Safe Mode.
4. Reset SMC.
5. Repair disk permissions.
6. Verify disk (and repair if necessary)
7. Reset Safari and clear caches.
8. Delete Caches folders.

How do I reinstall Mac OS X error?

“An Error Occurred While Preparing the Installation”, Fix

1. Restart your Mac. Simply restart your Mac to see if this fixes your problem.
2. Check the date and time. Make sure that the date and time on your Mac are set correctly.
3. Try installing in Safe Mode. Turn off your Mac.
4. Use macOS Recovery.
5. Use a combo update.

Why does my Mac keep failing to update?

The single most common reason your Mac won’t update is lack of space. For instance, if you’re upgrading from macOS Sierra or later to macOS Big Sur, this update requires 35.5 GB, but if you’re upgrading from a much earlier release, you’ll need 44.5 GB of available storage.

Why does it say an error occurred installing macOS?

The message might say that an error occurred while downloading, preparing, or installing, or that the installer is damaged or could not be verified. If the message recommends a solution, such as to redownload the installer and try again, please try that first. …

How do you diagnose Mac problems?

How to Use Apple Diagnostics to Check for Mac Hardware Problems

1. Press the power button on your Mac and then immediately press and hold down the D key on the keyboard. (
2. Release the D key when the prompt appears on the screen asking you to choose your language using the arrow keys.
3. Join a local Wi-Fi network if prompted.

How do I run Apple Diagnostics?

Turn on your Mac, then immediately press and hold the D key on your keyboard as your Mac starts up. Release when you see a progress bar or you’re asked to choose a language.

How do I restore my iMac?

Shut down your Mac, then turn it on and immediately press and hold these four keys together: Option, Command, P, and R. Release the keys after about 20 seconds. This clears user settings from memory and restores certain security features that might have been altered.

Why can’t I update my imac?

There are several reasons you might be unable to update your Mac. However, the most common reason is a lack of storage space. Your Mac needs to have enough free space to download the new update files before it can install them. Aim to keep 15–20GB of free storage on your Mac for installing updates.

How do I reinstall my iMac?

Install macOS

1. Choose Reinstall macOS (or Reinstall OS X) from the utilities window.
2. Click Continue, then follow the onscreen instructions. You’ll be asked to select your disk. If you don’t see it, click Show All Disks.
3. Click Install. Your Mac restarts after installation is complete.