How to Format a Macbook Pro. Formatting your Macbook Pro involves reinstalling OS X, and can be useful when your computer runs slow or malfunctions due to the installation of adware or faulty. Restoring your Macbook Pro is useful when you want to reinstall OS X or restore the original factory settings so you can prepare the computer for a new owner or resolve problems associated with viruses and corrupt files. The Macbook Pro can be restored by erasing your computer's hard drive and performing a clean install of OS X.
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I have a constant black screen on my MacBook Pro. Twice within the last six months I have inadvertently let the battery drain completely. Thinking this might be the problem, I replaced the battery and did an SMC reset. The power cord changed colors like it's supposed to and the battery seems to be charging but it still won't turn on. About a week after I replaced the battery it came on by itself. I was able to login , access files and mail and it seemed to work just fine. Foolishly, I logged out and turned it off and now I'm stuck with a black screen again. Any help would be greatly appreciated, thank you!
Common scenarios of 'Mac won't turn on'
My Mac stuck on boot screen
My iMac won't boot past Apple logo
My MacBook stuck on loading screen
My MacBook Air stuck on login screen
My iMac stuck on black loading screen
My MacBook Air won't turn on black screen
My MacBook Pro won't turn on but is charging
My Mac computer won't start up after macOS High Sierra update
My Mac computer won't boot after macOS Mojave update
My Mac computer won't turn on after macOS Catalina update
My Mac computer won't turn on after power outage
Solutions to solve 'iMac/MacBook won't boot'
There are 11 solutions to solve your iMac or MacBook not turning on problem.
Solution 1: Check the display
Check if the display is ok. If you are using an external display, make sure the video cable is seated properly at both the display and the Mac ends of the cable. Check the power cable as well. If it is loose, you need to reconnect the cable firmly at both ends.
Solution 2: Check the charging and power or reconnect the battery connector
Check the charging and power for your Mac computer when it is not turning on. Yes, you may think it is all working and nothing is wrong, but I fixed an older MacBook not turning on by switching to another charger. Sketchup architecture software.
1. Borrow a second charger from a friend and see if it works.
2. Make sure you are using the right charger for your iMac or MacBook.
3. Disconnect and reconnect the battery connector to see if iMac or MacBook can turn on.
4. Make sure that your power cable is undamaged and securely plugged into your Mac computer and a working electrical outlet. If you're not sure about the outlet, test it with a lamp or other device.
Solution 3: Reset SMC
SMC is the System Management Controller which handles a lot of tasks (Such as power button, waking the MacBook Pro) for your Mac. If your iMac, MacBook Air or MacBook Pro is new enough that you cannot remove the battery, please reset the SMC with following steps.
Step 1: Make sure your Mac is off, it isn't an issue if it won't turn on.
How to reset an apple computer password. Step 2: Hold Shift + Control + Option and hold the power button for 10 seconds.
Step 3: After 10 seconds release the keys, wait a second, press the power button and see if your Mac computer can turn on.
Solution 4: Uninstall RAM or a Secondary Drive
If you opened up your iMac, MacBook Air or Macbook Pro to upgrade RAM or add a new hard drive, that may be the problem. In this situation, uninstalling RAM or new hard drive and putting the old RAM/hard drive can solve the issue. Although it is an annoying job, but it is a good way to rule out something simple.
Solution 5: Run First Aid in macOS Recovery mode
If the only way that you can start up is from macOS Recovery mode, the operating system on your startup disk is not usable again. In this situation, Disk Utility built-in macOS Recovery mode is a chance to repair the boot issue.
Step 1: Turn on your Mac computer by pressing Power button.
Step 2: Press and hold Command+R keys immediately upon hearing the startup chime. Hold the keys until you see the Apple logo or a spinning globe.
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Step 3: Select Disk Utility from macOS Utilities in macOS Recovery mode.
Step 4: Select the corrupted Macintosh HD from the left panel of Disk Utility.
Step 5: Click 'First Aid' button on the top of Disk Utility window.
First Aid is a utility built-in the Macintosh operating system for checking and repairing file system errors on Mactintosh HD, external hard drive, flash drive, SD card, memory card, USB drive, etc,.
Step 6: Click 'Run' button to start the repair on the Macintosh HD.
If Mac Disk Utility failed to repair the corrupted Macintosh HD, you need to reinstall macOS or restore it from a Time Machine backup.
Solution 6: Recover data from Mac that won't turn on
After your Mac won't turn on, the important thing is the data stored in Macintosh HD. If the 'Mac won't turn on' issue cannot be solved, you have to recover data from unbootable Mac.
To recover data from Mac that won't boot, you have to run M3 Data Recovery in macOS Recovery mode.
Solution 7: Roll back Mac system to a previous state with APFS snapshot
If your Mac is running macOS High Sierra and later version, you can try this solution. However, returning your Mac system to a previous state may cause data loss, so data recovery is necessary before that.
Steps to restore your Mac system to a previous state with APFS snapshot:
Step 1: Turn on your Mac computer by pressing Power button.
Step 2: Press and hold Command+R keys immediately upon hearing the startup chime. Hold the keys until you see the Apple logo or a spinning globe.
Step 3: From the macOS Utilities menu, select 'Restore From Time Machine Backup' and click Continue.
Step 4: The Restore from Time Machine window will appear, click Continue.
Step 5: Select the disk that contains the snapshots and then click Continue.
Step 6: A list of snapshots will be displayed sorted by date and the macOS version they were created with. Select the snapshot you wish to restore from, then click Continue.
Step 7: A sheet will drop down asking if you really want to restore from the selected snapshot, click Continue to proceed. Once the restore is complete, your Mac will reboot automatically.
Solution 8: Restore your Mac from Time Machine backup
If you have a backup of your macOS system, you can restore it from the Time Machine backup with following method:
Step 1: Make sure that your Time Machine backup disk is connected to your Mac computer.
Step 2: Boot your Mac into macOS Recovery mode.
Step 3: From the macOS Utilities menu, select 'Restore From Time Machine Backup' and click Continue.
Step 4: Select your Time Machine backup disk as the restore source and then click Continue.
Step 5: Select a backup and then click Continue.
Step 6: Select the hard disk as the restore destination and then click Restore to continue.
Step 8: Restart your Mac computer when the restore is done.
Solution 9: Reinstall macOS in macOS recovery mode
Before reinstalling macOS, please make sure you have recovered all the data from the failed Macintosh HD.
Step 1: Boot your Mac into macOS Recovery mode.
Step 2: From the macOS Utilities menu, select 'Reinstall macOS' and click Continue.
Step 3: Follow the instructions to reinstall macOS.
Solution 10: Erase the drive and then reinstall macOS
The last chance is to erase the drive and then reinstall macOS, but before that, please make sure you have recovered all lost data from the unbootable Mac computer.
Step 1: Boot your Mac into macOS Recovery Mode.
Step 2: From the macOS Utilities menu, select 'Disk Utility' and click Continue.
Step 3: Select the unbootable Mac hard disk.
Step 4: Choose Erase, complete name, format, scheme, and then click Erase to reformat it.
Step 5: Return to macOS Utilities window in macOS Recovery mode, and select 'Reinstall macOS'.
Step 6: Choose the erased Mac hard disk and follow the wizard to complete the installation.
Step 7: Reboot your Mac and then check if your Mac computer can boot.
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Solution 11: Take your Mac to Apple store
If none of the above solutions helped, you will need to take your iMac, MacBook Air or MacBook Pro to an Apple store or a local repair shop to start working on a DIY solution to fix your Mac that won't turn on.
In our guide today we will talk about how to format Macs if you want to reinstall Apple's operating system from scratch and maybe try to solve a problem that does not allow you to perform an operation.
Content index
Preliminary operations
Before discovering the precise instructions for formatting a Mac, you need to do a couple of preliminary steps. In particular, you need to backup your data to create a backup of the most important files and have a USB stick with at least 8 GB if you want to install macOS from a pendrive.
In this case we list below some guides to be taken into consideration for backing up your data and for choosing the most suitable memory stick if you did not.
How to format a Mac using Recovery
The first solution that we propose to restore your computer as new via formatting is to use the Recovery mode called Recovery. This includes a number of tools that allow you to do many things, including restoring backups using Time Machine.
That said, let's see the steps to follow:
- Turn off your Mac by choosing Turn Off from the menu that appears after pressing the Apple logo on the top left.
- After that, turn the Mac back on while holding down the Cmd + R keys until the Apple logo appears and a loading bar in the center.
- Now, click on the word Use English as the main language and go to the next window by pressing the arrow at the bottom.
- At this point, click on Disk Utility and click Continue to access the archive disk management tool.
- In the window that appears, click on the icon relative to the hard disk or that of the SSD present in the computer through the left sidebar and click on Format.
- In the next step, fill in the Name field, set Mac OS Extended (Journaled) in the drop down menu of Format and Partition Map (GUID) in the Schema drop down menu.
- Now, all you have to do is click on the Format button to start formatting the Mac drive. Please note that the steps may be slightly different from version to version but the procedure is quite intuitive.
- Once the formatting has been successfully completed, close the Disk Utility tool , choose the MacOS Reinstall option from the MacOS Utility window and click Continue to proceed with the download and installation of the latest version of Apple's operating system on the PC.
How to format a Mac using a USB stick
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In case you would prefer to use an alternative solution to the Recovery tool, then you can rely on a simple pendrive and the DiskMaker X program. It is a completely free application that allows you to create a bootable USB stick in order to install macOS in just a few simple steps.
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Let's see how to make the most of the program:
- The first operation to do is to download the latest version of macOS (eg macOS Mojave ) from the Mac App Store to copy it later on the pendrive. To do this, simply type macOS in the Search field of the store and proceed with the download or go to the Purchased tab and choose Install that you find in correspondence with the previously downloaded operating system.
- At this point, log onto the official website of DiskMaker X using a simple browser (ie. Chrome, Firefox, or Safari ) and click Download DiskMaker X.
- After installing the free software, connect the USB stick to one of your Mac's USB ports and start the app.
- Now, from the window that appears, select the version of macOS downloaded from the Apple store just before to copy it to the pendrive.
- Then, click on the Use this copy button and confirm the formatting of the USB stick by pressing on An 8 GB USB Thumb Drive.
- In the next step, select the name of the pendrive on which you want to copy macOS, press the Erase keys then create the disk and Continue and type in the password of the Apple account to start copying the files.
- After completing the previous operation, restart the computer by holding down the Alt key on the keyboard.
- From the menu that appears, select the icon of the USB stick containing the operating system (which should be called Install macOS).
- From here, start the Disk Utility tool, select the Mac disk icon on which to install the OS via the left sidebar and press Format.
- After setting the Name, Format and Scheme (following the instructions given earlier), click on Format to start formatting.
- Once the operation is complete, close the tool and press the Install MacOS icon.
How to install macOS
Since we have already written and published a guide on the installation of the Apple operating system, we advise you to read it to properly perform this procedure. Find it below.
