If you need to use your drive on both Mac and PC then it's best to format exFAT. If you are not sure which one is best for you the File System Format Comparisions highlights the main difference between file systems. Seagate internal drives must be formatted before use. External hard drive: external hard drive is the hardware component like HDD and SSD that you used to store the data. In Mac Disk Utility, it shows in the first line of the whole disk directory (e.g. Partition: different from Windows, the partition is more like an operation to divide the entire, large, uncultivated, lonely, and original disk space. The instructions below are for Windows 10, but other versions of Windows from Windows 7 and up can also format an external drive as exFAT for use with Mac as well. Connect the drive to your.
Not every USB drive can be used with a Mac out of the box, you'll need to format the drive to compatible with the MacOS extended file system. If you want to ensure full Mac compatibility on your USB drive or flash disk, just read this article. And you will find two ways which will teach you how to format a USB drive on Mac, including Disk Utility and Terminal command. And if you lost your important data because of formatting, you can use a data recovery tool to recover data from a formatted USB drive on Mac.
The best format type for an external drive for Mac computers is APFS (Apple File System). It is a format type that was developed by Apple and launched in 2017. This format type is optimized for Mac products and is the best go-to option when formatting an external drive for your Mac.
1 What You Should Do First Before Formatting USB Drive on Mac
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The only way to be sure of the content you are formatting is to first remove the USB drive from Mac, know the title of other storage disks, insert the USB disk again and note the name of the disk. Now you are sure not to be formatting a wrong disk this way. Next, drag the USB data to a safe location for backup/recovery measures before formatting it. Then you are set to get it done!
2 What is the Best Format to Choose When Formatting USB Drive on Mac
You'll be given several format options when you try to format a USB drive on Mac, including OS X Extended (Journaled), OS X Extended (Case-sensitive, Journaled), MS-DOS (FAT) and ExFAT. If you are using macOS 10.13 or later, you'll also see an option named APFS, which is the default file system of macOS 10.13 and later.
1APFS
APFS is a new file system for macOS. It's the most appropriate format for flash drives and SSDs. However, in order to write to this file system, you need to have the latest macOS. If you're sure that you won't connect the USB drive to a Mac computer running old version, then you can format your USB drive with APFS.
2OS X Extended (Journaled) & OS X Extended (Case-sensitive, Journaled)
This is the default file system for macOS 10.12 and earlier. It doesn't put a limit on the size of files you can save on the drive, and that's the greatest advantage. Windows-running computers can read the files formatted to OS X Extended (Journaled), but can't write to them. In other words, you can transfer files from Macs to PCs without any problem, but you won't be able to transfer files from PCs to Macs. If you need to transfer data between PCs and Macs, you should consider other options.
The biggest difference between OS X Extended (Journaled) and OS X Extended (Case-sensitive, Journaled) is the latter is case-sensitive to folder names. Therefore, if you do not have special needs, you can ignore this option.
3MS-DOS (FAT)
This is Disk Utility's name for FAT32 file system. It's compatible with Windows operating systems and macOS. A USB drive formatted this way can easily transfer data between PCs and Macs. However, a USB drive formatted to FAT32 doesn't support an individual file larger than 4GB.
4ExFAT
Format External Drive Mac Mojave
ExFAT, the successor of FAT32, offers larger storage space and supports files larger than 4GB. So, if you need to transfer large files between PCs and Macs, ExFAT will be the best format for your USB drive.
3 How to Format a USB Drive on Mac
As earlier stated, you need to first back up your USB drive before formatting the drive as you may not be able to recover the contents again. Now, you can follow the steps highlighted below to get it successfully formatted.
Method 1: Format a USB Drive in Mac OS with Disk Utility
Step 1: Insert the USB to be formatted to a Mac computer.
Step 2: Navigate to Applications > Utilities, and click it twice to open it.
Step 3: Select the drive you want to format and click on Erase.
Step 4: Rename the USB drive (optional), and choose one file system from the options.
Format External Drive Mac
Step 5: Then select Master Boot Record for scheme, hit Erase.
Step 6: Once the process is done, you are ready to reuse the drive with new file system to save data again.
Method 2: Convert/Format USB Drive to FAT32/ExFAT
Step 1: Mac os yosemite icons. Connect the USB drive to your Mac computer.
Step 2: Click on cmd + space to run spotlight, input terminal then tap Enter key.
Step 3: Type diskutil list to find the location of your USB drive (eg: dev/disk2 is the USB drive in the below picture).
Step 4: Type sudo diskutil eraseDisk FAT32 MBRFormat /dev/disk2.
sudo gives you user right.
Diskutil calls disk utility program.
eraseDisk commands to format.
FAT32 sets the file system.
MBRFormat tells disk utility to format with a Master Boot Record.
/dev/disk2 is the location of the USB drive.
Note: You can replace FAT32 with ExFAT in the command, and your USB drive will be formatted in that way.
After the process completes, type diskutil list in command once more to check if the USB drive has been formatted successfully.
4Bonus: How to Recover Lost Data after Formatting a USB Drive
Users perhaps format a USB drive by mistake. Only after formatting it, they would realize that they had lost important data. If you don' t have a backup for data, then you can recover lost data from formatted USB drive on Mac with this trusted data recovery software - iMyFone AnyRecover. You can now recover all kinds of data from formatted USB drive on Mac with only 3 simple steps.
Features of iMyFone AnyRecover:
- Your Comprehensive Mac Data Recovery Solution
You can get back your lost photos, videos, documents, compressed files, and numerous kinds of data from formatted USB drive easily.
It adopts all-round scan and deep scan simultaneously, which can greatly shorten the scanning time and recover more data.
It supports data recovery on all types of USB drives. It also supports file formats like NTFS, HFS+, FAT32, exFAT, etc.
It allows you to preview scanned files before recovery. And you can recover any 3 files for free.
Follow the simple steps below to recover data after formatting USB flash drive on mac:
Step 1: Make sure you have connected your USB drive to your Mac successfully. Launch AnyRecover software on your system and select the formatted USB drive you are trying to recover from. And press the 'Start' button to start the scanning.
Step 2: The software will immediately begin the scanning process. You can pause the process at any time and resume from that point later.
Step 3: Immediately after the scanning process is complete, the software will list all the files in their respective file formats and folders. Tick on and confirm what you are going to recover, then click on 'Recover' button.
Most external hard drives are designed to work for Windows computers. So if you're trying to connect an external hard drive to a Mac, you might have to format the drive before you can use it. Here's how to do that:
How to Format a Hard Drive for Mac
Note: If you already used your external hard drive on a PC, be sure to back up any files on it. Formatting your drive will wipe out all the data in it.
Step 2: Click on cmd + space to run spotlight, input terminal then tap Enter key.
Step 3: Type diskutil list to find the location of your USB drive (eg: dev/disk2 is the USB drive in the below picture).
Step 4: Type sudo diskutil eraseDisk FAT32 MBRFormat /dev/disk2.
sudo gives you user right.
Diskutil calls disk utility program.
eraseDisk commands to format.
FAT32 sets the file system.
MBRFormat tells disk utility to format with a Master Boot Record.
/dev/disk2 is the location of the USB drive.
Note: You can replace FAT32 with ExFAT in the command, and your USB drive will be formatted in that way.
After the process completes, type diskutil list in command once more to check if the USB drive has been formatted successfully.
4Bonus: How to Recover Lost Data after Formatting a USB Drive
Users perhaps format a USB drive by mistake. Only after formatting it, they would realize that they had lost important data. If you don' t have a backup for data, then you can recover lost data from formatted USB drive on Mac with this trusted data recovery software - iMyFone AnyRecover. You can now recover all kinds of data from formatted USB drive on Mac with only 3 simple steps.
Features of iMyFone AnyRecover:
- Your Comprehensive Mac Data Recovery Solution
You can get back your lost photos, videos, documents, compressed files, and numerous kinds of data from formatted USB drive easily.
It adopts all-round scan and deep scan simultaneously, which can greatly shorten the scanning time and recover more data.
It supports data recovery on all types of USB drives. It also supports file formats like NTFS, HFS+, FAT32, exFAT, etc.
It allows you to preview scanned files before recovery. And you can recover any 3 files for free.
Follow the simple steps below to recover data after formatting USB flash drive on mac:
Step 1: Make sure you have connected your USB drive to your Mac successfully. Launch AnyRecover software on your system and select the formatted USB drive you are trying to recover from. And press the 'Start' button to start the scanning.
Step 2: The software will immediately begin the scanning process. You can pause the process at any time and resume from that point later.
Step 3: Immediately after the scanning process is complete, the software will list all the files in their respective file formats and folders. Tick on and confirm what you are going to recover, then click on 'Recover' button.
Most external hard drives are designed to work for Windows computers. So if you're trying to connect an external hard drive to a Mac, you might have to format the drive before you can use it. Here's how to do that:
How to Format a Hard Drive for Mac
Note: If you already used your external hard drive on a PC, be sure to back up any files on it. Formatting your drive will wipe out all the data in it.
- Connect an external hard drive to your Mac. Some external hard drives need to be plugged into an outlet to work.
- Go to Spotlight Search, type in Disk Utility, and click the first option. This will open the Disk Utility app, where you will find all the internal and external drives that are connected to your Mac.
- Then click View in the top-left corner of the window and select Show All Devices.
- Click the external hard drive you want to format. You can find this on the left-hand side of the screen under External Hard Drives. For the best result, select the disk (the highest option in the external tree).
- On the top menu, click Erase. This will open a small pop-up window with a warning that erasing the drive will delete all data stored on it and that it can't be undone.
- Choose a name, format, and scheme for your drive. You can choose whatever name you want, and you should choose GUID Partition Map for the Scheme in most cases. However, you can choose between the following formats:
- Mac OS Extended (Journaled) is the best option for most Mac users since it is compatible with all Macs.
- APFS (Apple File System) is only for newer Macs running macOS 10.13 or later.
- exFAT is compatible with both PC and Mac.
- MS-DOS (FAT) is also compatible with Mac and PC, but you can only transfer files smaller than 4GB.
- When you're done with providing the setup details, click Erase. This will immediately wipe the entire drive.
If you get an error message that states, 'Erase process has failed. Click done tocontinue,' don't freak out about it. This is an issue caused by Time Machine running on your externaldrive.
You will need to turn off Time Machine. You can do this by opening System Preferences and unchecking the boxnext to 'Back Up Automatically'.Then click Options beside 'ShowTime Machine in menu bar.' This will open another window. Click Cancel and it will turn off the Time Machine.
After you turn off the Time Machine, redo steps 4 to 6.
How to Partition anExternal Hard Drive on Mac
If you have formattedyour drive, you can then partition the drive, which will splitthe drive into two formats. This is perfect for anyone who uses Macs and PCsand wants to transfer files between the different operating systems with anexternal drive. Here's how to do that:
- Open Disk Utility and select the drive that you want to partition. It is best to click View > Show All Devices so you can selectthe disk rather than a container.
- In the top menu, select Partition.
- Then click the plus sign at the bottom of the pie chart. Every time you click this plus sign, a new partition will becreated.
- Choose a name, format and size for each partition. You can also change the size of each of the partitions bydragging the white dots at the edge of the circle.
- Finally click Apply.
Why Partition a Hard Drive?
Partitioning an external hard drive allows youto have separate drives for Mac, PC, and any other operating system. Now youdon't have to go out and buy hard drives for every computer you use.
A partition also gives you a dedicated space foryour Time Machine back-up files or a bootable backup of your operating system.It also helps protect your data if your drive gets infected with malware, as itwould be contained within one of the partitions.
Now that you know how to format an external drive for Mac, check out our blog on the difference between an HDD and an SDD.
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