Format an external hard drive for Mac. How to Format External Hard Drive for Mac. If you are trying to format Mac external hard drive, you can go over the process step by step: Step 1. Connect your hard drive to your Mac. Open Finder and choose 'Applications Utilities Disk Utility' to launch the app on your Mac. Once you open the Disk Utility app, you can see all the drives on your Mac are listed on the left-hand sidebar. Apr 30, 2020 Step 1 Open Finder, Applications, then go to Utilities and Disk Utility. Step 2 Follow the steps above to format the drive, and then you can use it with Time Machine on your Mac system.

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Some people are asking for a way to format a hard drive for Mac. Whether you are trying to backup Mac to an external hard drive, wipe out any personal information and sell the computer, or even use a new operating system, you need to format the hard drive on your Mac or PC.

But before you can do anything, you need to make it clear that the hard drive you want to wipe or format would be an external hard drive or an internal hard drive. We can easily format external hard drive for Mac. But when it comes to format internal hard drive for mac, things are getting a little more complicated. Maybe we will go through with the way to format a startup drive for Mac later. But now in this guide, we will cover the situation of formatting an external hard drive in steps.

Notice that you need to backup your importanct files on the hard drive you are going to format as the procedure would delete all of the data and bring it back to the factory settings.

Format an external hard drive for Mac

How to Format External Hard Drive for Mac

If you are trying to format Mac external hard drive, you can go over the process step by step:

Step 1. Connect your hard drive to your Mac.

Step 2. Open Finder and choose 'Applications > Utilities > Disk Utility' to launch the app on your Mac.

Step 3. Once you open the Disk Utility app, you can see all the drives on your Mac are listed on the left-hand sidebar. Just select the one you want to format and click on the 'Erase' tab.

Format an external hard drive for Mac

Step 4. Now in this interface, you will see a 'Format' option. In this drop-down box, you are allowed to choose different format.

OS X Extended (Journaled) should be selected if you are going to use the drive as a system or 'boot' drive on macOS.

Mac OS Extended should be selected if you will be using the drive as a media or 'scratch' drive on Mac.

Mac OS (FAT) is compatible with both PC and Mac platforms. However, there's a limit to transfer files within 4GB.

ExFAT is similar with Mac OS (FAT) but it can work with files as large as 16EB (exabytes)

So if you are going to use an external drive for both your Windows PC and your Mac, you should choose the ExFAT or FAT format.

Choose format for hard drive

Step 5. Name your drive you like but it would be better to choose something specific, so that you can make things clear every time when you look at its name.

Step 6. Click on the 'Security Options' button and you are able to choose the way (fastest or more secure) to format your external disk. The fastest way will save your time but it erases the drive only by removing the header information. That is to say, you can easily restore the hard drive using a data recovery software if the files haven't been overwritten. It is not good and the format process is meaningless in some way. So maybe you can try the more secure one. It may take quite a long time, but it will erase the drive in a deeper way.

Step 7. Click on the 'Erase' button to start erasing the external hard drive or USB. Formatting a hard drive will take a while and wait for it patiently. Once the progress bar is at 100%, the job is done!

How to Recover Formatted Hard Drive on Mac

As it is mentioned above, after formatting a hard drive, all data on the hard drive will be erased. But what if you have second thought and need to recover files from the formatted drive? Is it possible to recover files from formatted drive on Mac? Yes, it is possible. But you'll need FonePaw Data Recovery, a Mac data recovery program that can recover deleted files from hard drive, SD card, USB drive even the drive has been formatted.

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Step 1. Run FonePaw Data Recovery on your Mac. Remember that you should not install the application on the formatted drive. Otherwise, some of the files could be overwritten by the application.

Step 2. When the application is open, select the files you want to retrieve from the formatted drive. Tick the formatted hard drive. And click Scan.

Step 3. The application will first quickly scan some easy-to-get files on the formatted hard drive. If you need more files. Click Deep Scan to find files that are buried deeper.

Step 4. View the results by file types or path. Tick the files you need and click Recover. If you have deleted files that haven't been found, do not save the recovered files on the formatted drive. Instead, save them on other drive, such as your USB drive.

If you have any problem when following the steps to format hard drive for Mac, please leave us a message on the comment box below!

Reformatting Hd For Mac Os X Operating System Upgrade

Reinstall from macOS Recovery

macOS Recovery makes it easy to reinstall the Mac operating system, even if you need to erase your startup disk first. All you need is a connection to the Internet. If a wireless network is available, you can choose it from the Wi-Fi menu , which is also available in macOS Recovery.

1. Start up from macOS Recovery

To start up from macOS Recovery, turn on your Mac and immediately press and hold one of the following sets of keys on your keyboard. Release the keys when you see an Apple logo, spinning globe, or other startup screen.

Command (⌘)-R

Reinstall the latest macOS that was installed on your Mac (recommended).

Option-⌘-R

Upgrade to the latest macOS that is compatible with your Mac.

Shift-Option-⌘-R

Reinstall the macOS that came with your Mac, or the closest version still available.

You might be prompted to enter a password, such as a firmware password or the password of a user who is an administrator of this Mac. Enter the requested password to continue.

When you see the utilities window, you have started up from macOS Recovery.

2. Decide whether to erase (format) your disk

You probably don't need to erase, unless you're selling, trading in, or giving away your Mac, or you have an issue that requires you to erase. If you need to erase before installing macOS, select Disk Utility from the Utilities window, then click Continue. Learn more about when and how to erase.

3. Install macOS

When you're ready to reinstall macOS, choose Reinstall macOS from the Utilities window. Then click Continue and follow the onscreen instructions. You will be asked to choose a disk on which to 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.
• If the installer is for a different version of macOS than you expected, learn about macOS Recovery exceptions.
• If the installer offers you the choice between installing on Macintosh HD or Macintosh HD - Data, choose Macintosh HD.

Please allow installation to complete without putting your Mac to sleep or closing its lid. During installation, your Mac might restart and show a progress bar several times, and the screen might be empty for minutes at a time.

If your Mac restarts to a setup assistant, but you're selling, trading in, or giving away your Mac, press Command-Q to quit the assistant without completing setup. Then click Shut Down. When the new owner starts up the Mac, they can use their own information to complete setup.

macOS Recovery exceptions

The version of macOS offered by macOS Recovery might vary in some cases:

• If macOS Sierra 10.12.4 or later has never been installed on this Mac, Option-Command-R installs the macOS that came with your Mac, or the closest version still available. And Shift-Option-Command-R isn't available.
• If you erased your entire disk instead of just the startup volume on that disk, macOS Recovery might offer only the macOS that came with your Mac, or the closest version still available. You can upgrade to a later version afterward.
• If your Mac has the Apple T2 Security Chip and you never installed a macOS update, Option-Command-R installs the latest macOS that was installed on your Mac.
• If you just had your Mac logic board replaced during a repair, macOS Recovery might offer only the latest macOS that is compatible with your Mac.

If you can't get macOS Recovery to offer the installer you want, you might be able to use one of the other ways to install macOS.

Other ways to install macOS

• You can also install macOS from the App Store or Software Update preferences. If you can't install macOS Catalina, you might be able to install an earlier macOS, such as macOS Mojave, High Sierra, Sierra, El Capitan, or Yosemite.
• Or create a bootable installer disk, then use that disk to install macOS on your Mac or another Mac.