How To Format External Hard Drive For Mac Os X

HomeHow ToMacsHow to Format or Partition an External Hard Drive on Mac
  1. Why Format External Hard Drive
  2. How To Format Hard Drive For Mac

First, back up the data on the Mac-formatted drive if you have anything important on it. This process won’t actually convert the file system. Instead, we’ll just be wiping the drive and starting over from scratch. Any files on the drive will be erased. If you have a Mac lying around, you can plug the drive into a Mac and back up the files. To format an external storage device, connect it to one of the ports on your Mac. Turn the drive on, and make sure it appears in the Finder. If the drive is internal, it should already show up in.

If you recently purchased an external hard drive or portable SSD for your Mac, you probably noticed that Mac OS X doesn’t allow you to write data on to the drive. This is because the drive has been initialized for Windows NT File system, NTFS for short, and NTFS is primarily for PC use. Mac computers support a different file system. Nonetheless, there’s a way you can format your external drive for a Mac compatible file system.

Before you dive into learning how to format your external drive, there’s an important factor you need to take into account. If your external drive has many useful files on it, you should ensure that you copy or transfer these files elsewhere. This is because when you begin the process of formatting your drive, all of your data will be deleted.

Although you can use a recovery program, such a Data Rescue, in order to recover your files, it will be quite a hassle, and near impossible. It’s better to take precautions beforehand, and back up your files to another safe location. Once you’ve backed up your important files and data elsewhere, follow the instructions below in order to format your external drive.

Format External Drive to Work with Mac OS X

In order to format your external drive, you’ll need to use Disk Utility. Disk Utility comes built-in with your Mac, and is used to erase, format, or manage internal and external storage devices. Disk Utility is also used in order to manage volumes, and organize data into partitions. Overall, this is a very useful tool, that will aid you greatly in the process of formatting your external drive. In order to get started and use Disk Utility to format your external drive, follow the simple instructions below.

1. Launch Disk Utility. You can use Spotlight to do this, by clicking on the magnifying glass icon in the top right corner of your screen. Type in Disk Utility in the search bar, and press the enter/return key.

2. In the left windowpane, you’ll see a list of the available drives. Please select the drive you would like to format. If you don’t see your drive available, ensure that it’s properly connected to your Mac.

3. Click on the Erase tab.

4. A window will now pop-up asking which file system you would like to use, in order to format your external drive. The default option is the Windows NT File system. Select Mac OS Extended (Journaled), instead.

If you prefer to use your external drive for both Mac and Windows, you can choose ExFAT, instead. You’ll also have the option to rename your external drive, if you wish to do so. Please be patient as the erasing process carries out. This may take some time depending on how much information needs to be erased.

After the process has completed, you can check to see if it was successful. Follow the instructions below, in order to see if your drive was properly formatted.

1. Right-click on the icon for your external drive.

2. Click on Get Info.

3. Next to Format, it should say Mac OS Extended (Journaled).

That’s all it takes. You’ve formatted your external drive to be compatible with Mac OS X, and have confirmed that the formatting process was successful. You can now edit, read, and write files, as you wish.

Partition External Hard Drive on Mac OS X

You should create multiple partitions on your external hard drive, in order to have enhanced file organization. This is very easy to carry out, and only requires a few moments of your time. In order to get started and partition your external hard drive, follow the simple instructions below.

1. Launch Disk Utility. You can use Spotlight to do this, by clicking on the magnifying glass icon in the top right corner of your screen. Type in Disk Utility in the search bar, and press the enter/return key.

2. In the left windowpane, you’ll see a list of the available drives. Please select the drive you would like to format. If you don’t see your drive available, ensure that it’s properly connected to your Mac.

3. Click on the Partition tab.

4. A window will open with a blue circle and the name of your external drive. Click on the + button in order to add a partition to your external drive.

5. Feel free to allocate the desired volume to each partition that you create. You can easily do this by clicking on the small white circle and dragging it around, as you wish.

6. Feel free to rename each partition, as you wish, and select a file system for it.

7. Click on Partition in order to confirm you’d like to carry out the partition.

Please be patient as the process to partition your external drive is carried out. Once the process has completed, you’ll see a Operation successful message. Click on Done when you see this message. That’s all it takes. You’ve now partitioned your external drive. Thanks to Disk Utility, the process was very easy to carry out, and only required a few moments of your time.

If you’re worried the partition didn’t carry out successfully, there’s an easy way to confirm. All you need to do is navigate to your Mac OS Desktop. On your Desktop, you should now see various icons, representing the partitions that you created, using the instructions above. Although you may think there’s no need to create partitions for your external drive, you’ll soon learn that this is a very neat tool that will allow you to have enhanced file organization.

You can create different partitions for different needs. For example, you can have a backup partition, a personal use partition, a work partition, and other such partitions of the like. This will increase your productivity, as all of your important files and data will be properly organized, and easy to see.

Summary :

Want to format an external hard drive for Mac and Windows PC? Do you know how to do this work easily? This MiniTool article will show you specific methods to make external hard drive compatible with Mac and PC, which are easy and safe to complete.

Quick Navigation :

As we know, external hard drives are widely used to backup data or interchange files among different computers. Well, is there an external hard drive that could be shared between Mac and Windows PC? Of course, there is. Actually, most external hard disks could be compatible with Mac and PC as long as you format them correctly.

Why Need to Format External Hard Drive for Mac and PC

To put it simply, if you want to share external hard drive between Mac and PC, you need to format an external hard drive for Mac and PC.

How To Format External Hard Drive For Mac Os X

Currently, hard drives for Windows PC are always formatted with NTFS, while hard disks for Mac are formatted with HFS+. However, when we connect a NTFS formatted disk to Mac, Mac OS X doesn't allow us to write files to the drive neither edit files, though it can read a NTFS drive. Similarly, Windows OS will ask us to format the HFS+ formatted drive when we connecting such a disk, let along edit files saved on HFS+ formatted hard disks unless we resort to third party programs.

But luckily, there are file systems well supported by both Mac and Windows PC, and they are FAT32 (it might be called MS-DOS on Mac) and exFAT. As long as we format the external hard drive to one of these 2 file systems, it can be shared between Mac and Windows.

Further Reading

Both FAT32 and exFAT have advantages and disadvantages.

FAT32: FAT32 works with all versions of Windows, Mac OS, Linux, game consoles, etc.

However, single files on a FAT32 drive can't be larger than 4GB. If your external drive saves files larger than 4GB or you plan to save larger files to this drive, converting to FAT32 is not recommended.

In addition, a FAT32 partition must be not more than 32GB if you create it in Windows Disk Management. Of course, there is free partition manager that can help create a FAT32 volume up to 2TB, which also functions correctly.

exFAT: exFAT has very large file size and partition size limits, which means it's a good idea to format your external hard drive to exFAT.

Nevertheless, a lot of users complained that exFAT is slow, and they highly suggest using FAT32 if you can avoid file size constraints.

Three Options for Accessing NTFS Drives on Mac

Paid Third-Party Drivers

Some paid third-party NTFS drivers for Mac can be used to access NTFS drives on Mac. They work well and they have better performance than the free solutions which will be mentioned in the following part. Paragon NTFS for Mac is such a driver.

Besides, you can also use the paid third-party file system converters to convert NTFS to FAT32 or exFAT which are compatible with both Mac and PC. MiniTool Partition Wizard is one representative.

Free Third-Party Drivers

FUSE for macOS is a free and open-source NTFS driver that can enable write support. But, this solution is slower relatively. And the automatically mounting NTFS partitions in read-write mode can be a security risk for your Mac computer.

Apple’s Experimental NTFS-Write Support

The Mac OS has an experimental support for writing to NTFS drives. Usually, it is disabled by default and needs some messing around in the Mac terminal to enable it.

Why Format External Hard Drive

It doesn’t work properly all the time and could lead to potential issues with your NTFS file system. For example, it had corrupted data before. Thus, we don’t suggest using this tool and we believe it is disabled by this reason.

Here, we recommend using the paid third-party tools since they are easy-to-use and can do good work for you.

Then, we will introduce these three options for you in the following content.

The Best Paid Third-Party Driver: Paragon NTFS for Mac

Paragon NTFS for Mac can write, edit, delete, copy, or move files on NTFS volumes from your Mac computer. It offers a 10-day free trial. If you want to use it all the time, you need to pay for it.

With it, you don’t have to fiddle with terminal commands to mount partitions manually. Additionally, it can mount partitions automatically and safely. More importantly, it can code with the potential corruption. If you purchase a Seagate drive, you can even get a free download of Paragon NTFS for Mac.

All in all, it does its works well and gives you good user’s experience.

The Best Free Third-Party Drivers: FUSE for macOS

FUSE for macOS is a free solution to access NTFS on Mac. But it is less secure.

If you want to make automatically mount NTFS partitions in read-write mode on Mac, you need to temporarily disable the System Integrity Protection and replace one of Apple’s built-in tools with a binary that is more vulnerable to attack. Thus, your Mac is in danger when using this driver.

However, you can use it to manually mount NTFS partitions in read-write mode if you never mind using the Terminal. This will be safer, but you need to do more work. You can go to google the steps and see how complex they are.

Apple’s Experimental NTFS-Writing Support: Don’t Do This, Seriously

Although we mentioned this method in our article, we still don’t recommend it because it is the least tested. It is just for educational purposes, and it is available on Mac OS 10.12 Sierra. Perhaps, it will be unstable forever.

How to Quickly Format External Hard Drive for Mac and PC without Losing Data

Another way to access NTFS drive on Mac is to convert the NTFS/HFS+ to FAT/exFAT. Then, the drive can be used on both Mac and PC.

There should be some important data on the drive. To keep it safe, you can choose this best NTFS/HFS+ to FAT/exFAT converter: MiniTool Partition Wizard.

How to Convert NTFS to FAT32 or exFAT Without Data Loss

To format hard drive for Mac and Windows without data loss, we suggest using MiniTool Partition Wizard and its 'Convert NTFS to FATS32' function. If you are a personal user, you can try its Professional Edition.

Step 1: Run MiniTool Partition Wizard

Download this software to your computer. Then, you can open the software and input the license key to the pop-out window to get its Professional Edition.

Step 2: Convert NTFS to FAT32 with This Software

After running the program successfully, we can see its main interface as follows:

Here, please select the NTFS partition of external hard drive and choose 'Convert NTFS to FAT' feature from the left action pane. If there is more than one NTFS partition, convert all of them one by one.

At last, click 'Apply' button to make the change executed.

When MiniTool Partition Wizard shows it applies the change successfully, the original NTFS will finally become a FAT32 partition.

By this way, you can easily format an external hard drive for Mac and PC without losing any data. Then, you can share external hard drive between Mac and PC

You Can Convert NTFS to exFAT in 3 Steps

However, if you want to convert NTFS to exFAT to make external hard drive compatible with Mac and PC, 3 steps are required.

Step 1: Transfer Data out from External Hard Drive

You can choose to copy and paste those files to other external devices or internal hard disk of Windows, but it will cost much time. Instead, you can use MiniTool Partition Wizard Free Edition to create a copy for your external drive, which is faster.

If there is only one NTFS partition on external hard drive, refer to the tutorial Copy Partition to get instructions. However, if there is more than one NTFS partition, view Copy Disk to get specific operations.

Step 2: Create exFAT Partition with MiniTool Partition Wizard

The Free Edition of this software also enables you to do this job.

Firstly, you need to delete the partition by using this software. Just open the software to enter its main interface. Then, choose the target partition and click 'Delete Partition' from the left action pane. After that, you should click 'Apply' to keep this change.

Secondly, the target partition will become unallocated. Here, you need to choose that partition and click on 'Create Partition' from the left action pane.

Thirdly, you will see a pop-out window. Here, you can choose 'exFAT' from the 'File System' setting option. At the same time, you can also set some other parameters for this partition, including 'Partition Label', 'Drive Letter', 'Size And Location'. After that, please click on 'OK'.

Fourthly, you will go back to the main interface. Then, please click on 'Apply' to save these changes.

Finally, an exFAT partition will be created on your external hard disk so that it could be shared between Mac and Windows PC

Step 3: Transfer Data back to External Drive

If you want to share files that you have backed up between Mac and PC, now please transfer these files back to external hard drive.

How to Convert HFS+ to FAT32 or exFAT without Losing Data

Besides, you can format an external hard drive for Mac and Windows by converting HFS+ to FAT32 or exFAT without losing any data.

Step 1: Backup Data in HFS+ Partition on Mac

Just transfer all useful files out from the external hard drive to other devices on Mac. Of course, if you have a backup already, ignore this step.

Step 2: Create a FAT32 or exFAT Partition on Windows PC

Some people may ask why create such partitions on Windows rather than Mac. That is because there are cases reporting FAT32 (MS-DOS) or exFAT partitions created on Mac did not work well on Windows.

Please skip to Solution 1: Format External Hard Drive to FAT32 to get steps to create a FAT32 partitions or go back to Step 2: Create exFAT Partition with MiniTool Partition Wizard to get operations to create an exFAT partition.

How to Make an Empty External Drive Compatible with Mac and PC

If there is no file saved on your external hard drive, how to make external hard drive compatible with Mac and PC?

It's very easy to share it between Mac and PC and you also need a Windows computer, a Mac machine, and the free partition manager MiniTool Partition Wizard Free Edition.

There are 3 solutions for this case, so please choose the one you like most to format external hard drive Windows 10/8/7.

Solution 1: Format External Hard Drive Windows 10/8/7 to FAT32

Since users are unable to create a FAT32 partition larger than 32GB in Windows Disk Management, they need to use MiniTool Partition Wizard Free.

Note: when you connect an external hard drive which is formatted with HFS+ with computer, Windows may ask you to format the drive. Please choose Cancel.

Please download and install this program on your Windows computer to format an external hard drive for Mac and PC.

Firstly, open the software to enter its main interface as follows. Here, please select the NTFS partition or HFS+ partition of external hard drive, and click 'Delete Partition' feature from the left action pane. If there are multiple partitions on the external disk, please select the disk and click 'Delete All Partitions' feature instead. After that, an unallocated space will be released.

Secondly, you can create one or more FAT32 partitions in unallocated space. Select the unallocated space and choose 'Create Partition' feature from the left side.

Then, you should choose 'FAT32' from the 'File System' option in the pop-out window. Meanwhile, you can set properties for this new partition and click 'OK' to go back to the main window of Partition Wizard.

At last, click 'Apply' button to make all changes performed.

Solution 2: Format External Hard Drive Windows 7/8/10 to exFAT

Firstly, please delete the NTFS or HFS+ partition in either MiniTool Partition Wizard or Windows Disk Management to release unallocated space. Then, you can create an exFAT partition with MiniTool Partition Wizard Free Edition by following steps introduced in the section Step 2: Create exFAT Partition with MiniTool Partition Wizard.

Once a FAT32 or exFAT partition is created on your external hard drive, you can share it on both Mac and Windows PC.

Solution 3: Create One HFS+ Partition for Mac and One NTFS Partition for Windows

Alternatively, you can create 2 partitions on the external hard drive: one is for Mac, and the other is for Windows. As to size for each partition, it depends on your own demands. By this way, you can easily format an external hard drive for Mac and Windows.

Step 1: Create a NTFS Partition and a FAT32 Partition

Drive

Please run MiniTool Partition Wizard Free Edition, then delete all the original NTFS or HFS+ partition(s), and create a new NTFS partition as well as a FAT32 partition, and the latter will be formatted to HFS+ in Mac machine.

Then, select the external hard drive and choose 'Delete All Partitions' to create an unallocated space.

Here, select the unallocated space and choose 'Create Partition' feature from the left action pane.

Now, please specify partition label (Windows is recommended), partition type (primary or logical), drive letter, file system (NTFS), cluster size, and partition size (you can change the length of the handle to adjust partition size). Then, click 'OK' to continue.

Now, you can see a NTFS partition is created. Please use the same way to create a FAT32 partition labeled with Mac. At last, click 'Apply' button to make all changes performed.

Step 2: Format the FAT32 Partition to HFS+ Partition on Mac

Please go to Utilities → Disk Utility to get the window below:

How To Format Hard Drive For Mac

Then, select the external hard drive and click 'Partition' tab on the top.

Now, find the FAT32 partition and format it to OS X Extended (Journaled), which is the desired HFS+. Finally, click 'Apply' button to make all changes performed.

Tip: You may receive the prompt 'The volume 'MAC' is not journaled. As a result it can not be resized'. Just ignore the message and click 'OK' button to continue.

After NTFS partition and HFS+ partition are created on your external hard drive, it can be shared between Mac and Windows PC.

Note: You might be unable to share all files saved on external drive since Windows doesn't support HFS+ partition while Mac doesn't support NTFS partition completely.
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Bottom Line

Are you planning to format an external hard drive for Mac and PC? If yes, now try one of our methods to make external hard drive compatible with Mac and PC.

Should you have any problem, just feel free to leave us a message in comment part below or send an email to [email protected].

Format Hard Drive for Mac and PC FAQ

How do I make my hard drive compatible with Mac and PC?
If you want your hard drive to be compatible with both Mac and PC, you should format the hard drive to the file system that is supported by both of these two operating systems. FAT32 and exFAT can meet your requirements.
What is the best hard drive format for Mac and PC?
Although both FAT32 and exFAT are compatible with Mac and PC, exFAT is a much better choice because it has fewer limitations. For example, it has a larger file size and partition size limits.
If you formatted your hard drive to exFAT with Apple's HFS Plus, Windows will not recognize the exFAT drive. You can consider using a third-party partition tool to format your hard drive to exFAT.
Windows can only read a Mac hard drive that is formatted to FAT32 or exFAT using third-party software. If the file system of the Mac hard drive is HFS+ or APFS, the drive will become unreadable in Windows.