Here is how to check the current drive’s file system. Plug your Flash drive into your Mac. Launch the Finder and locate the Flash drive. Right–click (or Command + Click) on it and choose Get Infor from the menu. You can see drive’s file system displayed next to Format, in the General section (ExFat, MS-DOS(FAT), OS X Extended). However, if it is not designed for Mac users, you won’t be able to format USB flash drive by Mac OS preferred filed system. This is because a lot of computer systems across the world run Windows OS which utilizes a different file system knowingly called FAT32. After choosing your drive, click on the 'Erase' button on the top menu bar. You will see a popup window, in that window, give the name to your drive and select a format for your USB drive. Once done, click on the 'Erase' button. This will format Write Protected USB drive on Mac using Disk Utility.

Though the default hard disk file system (also known as format) of Windows and Mac are different, there should be some ways to format an external drive for both Mac and PC. This post will conclude these tutorials:

• A comparison of common File Systems for Mac and PC
• Guide to format external hard drives for Mac and PC
• Guide to partition an external hard drive for Mac and Windows PC
• Make external hard drives compatible with Mac and PC without formatting

Then, after reading this post, you'll know what is the best file system for your camera's SD card and what is the best format for your Mac and PC. More importantly, you will know how to format flash drives for Mac and PC and make hard drives compatible with macOS and Windows.

Common File Systems for Mac and PC

The file system is one of the most important part for an external hard drive because it manages how your files are stored and retrieved. So, every hard disk needs a proper file system, including desktop drives and portable storage devices like external hard drives, USB flash drives and SD cards. However, different file systems have different advantages and disadvantages. So before you know how to format a hard drive, you should know the pros and cons of each file system.

1. FAT32

FAT file system includes three major file system variants but the majorly used one is FAT32. FAT32 is commonly used in floppy disks, SD memory cards, USB flash drives, digital cameras, as well as many portable and embedded devices.

Pros

• Works universally with all versions of Mac, Windows, Linux, game devices, as well as other devices supporting a USB port.

Cons

• Doesn't support a file size larger than 4GB and a drive partition size larger than 32GB on Windows.
• Doesn't support the drive partition larger than 2TB on macOS.

2. exFAT

exFAT is a good option for external hard drives (e.g. Seagate Backup Plus Slim), especially for large-capacity removable storage devices. It also is frequently used in flash memory drives such as USB flash drives and SD cards. exFAT is easily often implemented in firmware that has low memory and low power requirements, such as cameras, mobile phones, media players, etc.

Pros

• Supports the largest partition and file sizes by today's standards.

Cons

• Not compatible with too much old operating systems.
• Not a good option for drives less than 32GB because it can't maximize space utilization.

3. NTFS

NTFS is a proprietary journaling file system developed by Microsoft. It is used as the default file system of Windows system hard drive (e.g. Windows 10). NTFS does well in data security based on its encryption, access permission control, and log file.

Pros

• Improved performance, reliability, and disk space use.
• Performs better in protecting data security, data management.
• Compatible with all versions of Windows and latest hardware.

Cons

• Read-only in macOS and the disabled-by-default write support for NTFS in macOS is unstable.

4. Mac OS Extended (HFS+)

HFS Plus or HFS+ is a journaling file system developed by Apple Inc. It's the startup disk’s default file system before macOS High Sierra. It also frequently used as Time Machine backup external hard drives of WD, Seagate, etc.

Pros

• Supported by all versions of Mac OS X and macOS.
• Has journaling, compression, and encryption features.

Cons

• Has no access permission control.
• Perfoms slow or crash in dealing with a large number of files.
• Harder for data recovery when an HFS+ hard drive is corrupted.

5. Apple file system (APFS)

APFS is the new proprietary file system of Apple. It has been known to increase read/write speeds on solid-state drives (SSDs), as well as increase storage space due to the way in which it calculates the available data on disk.

Pros

• Allows full-disk encryption with single or multi-key encryption for added security.
• Efficient in management of free storage space

Cons

• Not good for Time Machine backup due to no support for hard links to directories.
• Can only be used on macOS 10.13 and above.

After knowing their unique specifications, it becomes easier to choose the best file system for your storage device. For instance, you would know why exFAT is better for camera SD cards, or why NTFS is better for external backup drive on Windows 10. In a word, you can format or reformat your external hard drive per your requirement, either for Mac and PC.

Warning: Formatting will erase data on this drive. So, make sure you have a backup. However, if you have formatted this drive and lose files, you can recover lost data from formatted external hard drive with iBoysoft Data Recovery for Mac.

How to format external hard drives for Mac?

To format external hard drives on Mac, you'll need the built-in disk management tool called Disk Utility. Then, you need to choose the best file system for your external hard drive when erase it.

Tips: Remember to back up the files on the external hard drive if you have saved anything important on it.

• Guide to format external hard drive on Mac computer.

How to format external hard drives for Windows computer?

Similarly, you can also format your drive on Windows computers with a utility called Disk Management.

Tips: To prevent data loss during formatting, make sure you haven't saved important files on the drive. If you have, backup them first.

• Guide to initialize and format external hard drive on Windows computer.

How to format an external hard drive for Mac and PC?

It's important to know how to format an external hard drive for your Mac and PC before you use it to free up space and transfer files between computers. If you don't format the external hard drive correctly, it won't work to the utmost extent. For instance,Windows uses NTFS, while Mac uses HFS+ or APFS. Out of the box, Windows can't read or write to HFS+/APFS drives and Macs can't write to NTFS drives either.

Sometimes, users need to use the same external hard drive interchangeably on Mac and PC. To make it compatible with both macOS and Windows, you need to reformat the external hard drive.

Whether you are using an APFS/HFS+ or a Windows NTFS formatted external hard drive on Mac, you can reformat the external hard drives for both Mac and PC. File systems like FAT32 and exFAT can make the external HDD compatible with both Macs and Windows PCs.

Warning: Reformatting will wipe files off the external hard drive. So, you should make sure you have backed up your files on the external hard drive before you continue any steps.

When should you choose FAT32 file system?

FAT32 works with almost any operating system as well as video game consoles, Android USB expansions, media players, and other devices. However, FAT32 can only support files up to 4 GB in size. So, If all your files on the external hard drive are smaller than 4 GB, and the drive itself is smaller than 2 TB, then FAT32 is a better choice for you to use the hard drive on Mac and PC.

When should you choose exFAT file system?

Similarly, exFAT is also a widely compatible file system. The difference is that exFAT has no limitations on file size and hard drive size. So, when the external HDD you want to used for both Mac and PC is larger than 2 TB, exFAT is the best choice.

After you choose the best format for your drive, you can format or reformat the external hard drive in Disk Utility as it was introduced. Then the external hard drive will work both for Mac and PC.

When should you choose NTFS file system?

Some users would prefer to the features of Windows NTFS file system. However, naturally, Disk Utility can't format external hard drive to NTFS. If you want an hard drive that you can only read on Mac but have full access on Windows, NTFS is the best choice. You can also use iBoysoft NTFS for Mac to reformat the external hard drive with NTFS on Mac.

• 1. Download and install iBoysoft NTFS for Mac on your Mac.Then, restart your Mac.
• 2. Connect the external hard drive to your Mac and launch this software.
• 3. Find Disk Management in its main menu and click on it.
• 4. Locate the volume you want to reformat, select it, and then click on Erase to NTFS.

What to do if you can’t format the external hard drive on Mac?

Usually, to format the external hard drive as FAT32 or exFAT, you are advised to do this on a Mac computer via Disk Utility. But if you have formatted the external hard drive under the Windows system, it would cause some inconvenience. You can't add or re-partition volumes of the external hard drive again on Mac. In this case, your only choice is to backup your files and reformat the whole disk.

How to partition an external hard drive for Mac and Windows PC?

Except for having the whole external hard drive formatted, you can also split this disk with two partitions. One is formatted with the file system that is compatible with macOS, another partition is compatible with Windows conversely. By this means, you can use all the advantages each format has on the respective system.

Warning: Still, you need to back up files on this drive before you begin to create two separate partitions to work for Mac and Windows PC.

For some Mac models, the partition option would be greyed out in Disk Utility. So, we suggest that it's better to use a PC to partition an external hard drive for macOS and Windows. Here are the steps to partition an external hard drive for Mac and Windows PC, which is a little tricky.

How To Format Flash Drive For Mac And Pc

Step 1: Connect the external hard drive to your PC and then launch Disk Management.

Step 2: Check if the external hard drive is initialized or not.

If the drive is not initialized, you need to initialize the external hard drive with Master Boot Record (MBR). Then you can create two new partitions. You need to format one of them as NTFS for Windows use and format the other as your wish.

If the external hard drive is initialized, you need to right-click the disk to check if it's an MBR external hard drive.

• If you see Convert to GPT Disk in the context menu, be it greyed out or lighted, it’s an MBR hard drive. Then you can create two or more partitions. And you need to prepare one partition for NTFS file system, and reformat with any file system.
• If you see Convert to MBR Disk in the menu, it's an GPT hard drive. In this case, you need first backup files, delete the existing partitions, then click the Convert to MBR Disk button. Then, you can create two new partitions. You need to format one partition as NTFS for Windows use, and then format the other randomly.

Step 3: Up to now, there should be at least two partitions on the external hard drive. And one of them (the NTFS one) is ready for Windows use. Then, you need to safely remove the external hard drive and plug it into a Mac.

Step 4: Open Disk Utility and select the other partition (not the NTFS one) under the name of your external hard drive.

Step 5: Click Erase on the top, choose Mac OS Extended format when it asks, and chose Erase to finish.

Up to now, the external hard drive will have two partitions. One is HFS+ formatted for Mac, and the other is NTFS formatted for Windows.

By creating two separate partitions, you can use this external hard drive on both Mac and Windows. You won't be able to write to the Mac partition from your Windows computer, and vice versa. Thus, it's a good solution for people who need to swap between two operating systems but with separate work.

Make external hard drives compatible with Mac and PC without formatting

Many famous external hard drives like Seagate Backup Plus Ultra Touch and WD My Passport are pre-formatted with NTFS. However, the NTFS file system is a hassle for users who need to use the same external hard drive on both Mac and Windows. The external hard drive is not letting you add files if you use an NTFS external HDD on Mac. It will be read-only and you can't write to this drive normally in this case.

Many users don't know this and use the external hard drive directly. And when they want to reformat the hard drive to use it interchangeably, only to find that files on the drive are erased as well.

Then, can you solve external hard drive read-only without formatting?

Definitely! If you want to use NTFS formatted external hard drives on Mac, software like iBoysoft NTFS for Mac that might be helpful.

iBoysoft NTFS for Mac - professional NTFS driver for Mac

iBoysoft NTFS for Mac is a professional NTFS for Mac software, which can automatically mount NTFS drives in read-write mode on Mac. It supports macOS Big Sur 11/Catalina 10.15/Mojave 10.14/High Sierra 10.13.

With this useful tool, you'll have full access to NTFS drives on Mac and make your external hard drive interchangeable between Macs and PCs without formatting. Also, you can mount and unmount NTFS drives from the Mac menu bar with advanced and optimized options.

What's more, iBoysoft NTFS for Mac is also a handy tool to manage NTFS external drives. You can use it to easily mount, unmount, repair, erase NTFS external hard drives, USB flash drives, SD cards, memory cards, CF cards, pen drives, etc. on Mac.

Tutorial to mount NTFS external hard drive on macOS with read-write mode with iBoysoft NTFS for Mac

• 1. Free download, install, and launch iBoysoft NTFS for Mac on your computer.
• 2. Connect your NTFS external hard drive to Mac, and iBoysoft NTFS for Mac will automatically mount it.
• 3. Write to NTFS external hard drive after the disk has been mounted in read-write mode successfully.

If you want to use HFS+ or APFS formatted external hard drives on Windows, you can also attempt to install HFS+ for Windows software or APFS for Windows software on your PC to get read and write access to this external hard drive.

Conclusion

To sum up, it is easy to format an external hard drive for both Mac and Windows PC. You can either choose to format the whole disk as exFAT/FAT, or you can create two separate partitions of HFS+ and NTFS if you prefer. But compared with formatting, an NTFS for Mac driver like iBoysoft NTFS for Mac is a better and feasible solution.

Summary: This article tells how to format a USB flash drive on Windows 10/8/7 and Mac when you want to reformat a new or second-hand removable storage device to make sure it doesn’t contain any malicious files or fix the logical errors.

What is Formatting？

Formatting is the fastest way to prepare the USB flash drive for the initial use. It wipes all the data stored on your flash drive and allows full use of the storage capacity. Meanwhile, it also creates a filing system that can help organizes your data on Windows or Mac.

Which File System Should I Choose for a USB Flash Drive?

We can’t talk about formatting without talking about file system as it differs when we are using the different computers; the common file systems are FAT32, exFAT, and NTFS for Windows, APFS, HFS+, and exFAT for macOS, here we will only talk about the most common file systems when formatting a USB flash drive:

• FAT32: It’s compatible with all major operating systems and uses less memory usage. But it cannot handle single files larger than 4GB and has a limited partition size (up to 32GB).
• NTFS: It can create partitions larger than 32GB and read/write files larger than 4GB. Besides, it supports on-the-fly file encryption. The disadvantage is that the Mac computer can only read the data from the NTFS drive.
• exFAT: It provides an unlimited file and partition size. It serves no matter the Windows or Mac users who want to work with files larger than 4GB.

We strongly recommend that you use exFAT, which is considered the best choice for both Windows and Mac computers, whereas the exFAT file system works better than FAT32 and can handle the file size up to 16GB.

How to Format a USB Drive on Windows 7/8/10?

After deciding which file system you are going to apply, let’s explore the formatting methods. Generally, On Windows 10, 8, 7, there are some common ways you can format a USB flash drive.

Method 1: Format a USB Flash Drive Using File Explorer

This is the easiest way with which many users are familiar. Refer to the following steps to learn how.

Step 1: Connect your USB flash drive and open press Win key + E to open File Explorer.

Step 2: Right-click on the drive and choose the Format option.

Step 3: Expand the File system drop-down menu and select the exFAToption.

Step 4: Click on the Start button.

Note: Uncheck the Quick Format means full format; it goes with a thorough scanning and wiping your data on the USB flash drive, you will have no chance to get back your data after using this option.

Method 2: Format a USB Flash Drive Using Diskpart

Using diskpart to format a USB flash drive is another useful method, and even it works for the computer user who has no exFAT options in File Explorer or Disk Management. However, the user should select the correct volume before carrying out a quick or full format on your USB flash drive:

Step 1: Enter Command Prompt in the search bar and then right-click it, choose Run as administrator.

Step 2: Enter below-written commands in the same order and same diskpart window:

• diskpart
• list volume
• select volume NUMBER (Replace NUMBER to the exact number of your USB flash drive)
• format fs=exFAT quick (Don’t enter quick if you want a full format)

Note: Replace exFAT if you choose another file system, for example, enter the command format fs=fat32 to format the USB flash drive into FAT32 format.

Method 3: Format a USB Drive Using Disk Management

This is a method similar to the one performed by using File Explorer, and here are the steps you can follow:

Step 1: Press Win + Q, type in Disk Management and open it.

Step 2: Right-click on the desired USB flash drive and select Format.

Step 3: Select exFAT from the File System drop-down menu.

Step 4: Click on the OK button.

Method 4: Format a USB Flash Drive Using PowerShell (Windows 10 Only)

PowerShell is a task and configuration management platform which was first appeared in 2006; it’s powerful than Command Prompt that can be used to automate many different system administration tasks, and of course, for formatting a USB flash drive:

Step 1: Right-click on the Start menu at the lower-left corner and choose Windows PowerShell(Admin).

Step 2: Enter the following command to view the USB flash drive you want to format:

• Get-Volume
• Format-Volume -DriveLetter F -FileSystem exFAT (Replace F to the exact drive letter of your USB flash drive)

Note: In this method, you should note that after entering the format command, it goes to format the USB flash drive to exFAT directly, and if you want a FAT32 drive, just replace exFAT to FAT32, that’s all.

How to Perform a USB Drive Format on Mac?

Reformatting a USB flash drive in exFAT on Mac is easy than you imagine; we should thank the Disk Utility that can make the reformatting easy to complete; Likewise, follow with the same steps if you would like to reformat an SD card, internal or external hard drive:

Step 1: Connect the USB stick to the PC with one of the USB ports and then press Command + Space to search Disk Utility.

Step 2: After selecting the drive on the left part of the Disk Utility window, click on the Erase button lying at the top of the window.

Step 3: Now, select exFAT from the drop-down menu of the Format.

Step 4: Click the Erase and wait for the reformatting process to complete.

Note: Please back up your data before the formatting of your USB flash drive as Erase will wipe all of the stored data!

What if you were not intended to format the USB flash drive, and there are lots of the vital photos, videos, documents, or any other files stored on the drive that have been lost due to the reformatting. What should we do to retrieve lost data? Don’t worry, a quick format won’t cause all of the data to lose, the file contents still exist on the USB flash drive, and you will have a big chance to get back your data as soon as you launch the third-party data recovery program – Bitwar Data Recovery to perform a full scan.

Recover Files From a Formatted Drive Using Bitwar Data Recovery

No matter how carefully or gradually backing up the USB flash drive, the data loss is still inevitable, such as the USB flash drive turns to a RAW drive suddenly, or you might unplug the drive without safely removing from the computer; moreover, the backup files are out-to-dated when the accident happens.

We have experienced many of the users encountered the same frustrating issue that causes the works to stop, and most of them finally chose to start the work again as they didn’t know how to restore the data. Right now, you’ll be all set if using Bitwar Data Recovery with the steps below:

Step 1: Go toBitwarsoft Download Center to download and install Bitwar Data Recovery.

Step 2: After completing the installation, open the Bitwar data recovery software and then select the formatted USB flash drive.

Step 3: Choose a recovery mode. We strongly recommend you choose the Quick Scan for the first time since this mode scans the whole drive in just a few minutes. However, if this mode can’t work to find your data, try with the Deep Scan mode next time.

Step 4: Choose the File types and then press the Scan button.

Step 5: Double-click on wanted files to preview them. After that, click on Recover to save the files to a safe place.

Note: Please be careful not to save the recovered files to the formatted USB flash drive. The reason is to prevent the data from being overwritten again.

Conclusion

Like many other storage devices, The USB flash drive can be easily failed without any concerns. There are many possible causes behind the happening of this accident, such as the unstable flash chip, disconnect the USB flash drive before safely removing from the computer, virus attack, or Trojan infection. Some of the failures are just logic errors that can be fixed easily by reformatting the drive. Some failures prove that your USB flash drive was physically damaged, and that means you may have to consider buying a new one.

If you purchase a brand-new USB flash drive and want an initial usage or the USB flash drive has encountered any logic errors as told, this article serves you very well, as it tells how to format a USB flash drive with different methods on Windows or Mac. What if there were vital data stored on the USB flash drive, it is suggested to retrieve the data using Bitwar Data Recovery before starting the formatting.

Follow with the steps mentioned above and hope that you can finally reformat the USB flash drive or get back the wanted data.

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