Nowadays, when you buy a USB drive, you can use it right out of the box with your Mac. However, unless it’s been designed for use with a Mac, it won’t be formatted using macOS’ preferred file system (either Mac OS Extended or APFS, depending on which version of macOS you’re running).
Most flash drives are formatted FAT32 out of the blister pack and can be used as is by virtually every Mac ever built. Install NTFS-3G or one of the commercial NTFS drivers, format your thumb drive as NTFS, and have a much more reliable SneakerNet between your Mac and Windows computers. If the USB flash drive is within 32GB, the native Windows File Explorer and Windows Disk Management are good FAT32 formatter. However, if you want to format 64GB or 128GB USB to FAT32, you can only depend on CMD (Usually diskpart and powershell) and a third-party FAT32 format tool. This format is considered as default file system format of the Mac OS X drives. It also supports OS X Lion, like Versions. This format will allow you to use your flash drive on Mac without any limitations. With Mac OS Extended (Journaled) format, you can setup OS X startup drive. Make sure you have right files and know how to do it.
That’s because most of the computers in the world run Windows, and Windows uses a different file system, usually one known as Fat32. Drives formatted as Fat32 can be read from and written to by macOS, but it’s not optimal and you’re more likely to run into problems than if you use macOS’ native format. So, if you’ve bought a USB drive that’s formatted as Fat32, or any other format other than Mac OS Extended (also known as HFS+) or APFS, here’s how to format a USB drive on Mac. It’s exactly the same procedure if you need to reformat a flash drive on a Mac.
How to format a USB drive on a Mac
1. Plug the drive into a USB socket (if you have a recent MacBook or MacBook Pro that only has USB-C connectors, you’ll need a USB-C to USB-A adaptor).
2. Open a new Finder window and click on the drive. Make sure it has no files on it that you need. The process of reformatting it will wipe all the data from it.
3. Once you’ve copied any files you need from the USB drive to your Mac, go to Applications>Utilities and double-click on Disk Utility.
4. Click on the USB drive in the sidebar and then choose Erase from the toolbar at the top of the window.
5. In the window that drops down type a name for the formatted drive in the box next to Name.
6. Choose a format from the dropdown menu.
7. If you have previously stored sensitive data on the drive, click the Security tab.
8. Choose a security level using the slider. The further to the right you move the slider, the more ‘passes’ the erase tool will make and the more securely files will be deleted. However, it also increases the time it takes to format the drive quite considerably.
9. Click Ok then click Erase.
Tip: You don’t need to erase a whole drive to delete files securely. If you have confidential files or sensitive data you need to remove from your Mac completely, you should use CleanMyMac’s File Shredder. It’s specifically designed to securely delete sensitive data and will render it unrecoverable. You can download CleanMyMac X for free here.
Which format to choose?
If your Mac is running macOS High Sierra or later, you have two options for file formats: APFS and Mac OS Extended. Which should you choose? The key point is that disks formatted as APFS won’t be recognized by Macs running versions of macOS older than High Sierra. So if you think you might need to plug the USB drive into a Mac running an older version of macOS, format it as Mac OS Extended.
APFS is optimized for SSD (solid state drive) such as flash drives, so if you reformat a flash drive on a Mac, you should definitely choose APFS (unless you plan to use it with a pre-High Sierra Mac, of course). Even on hard drives, however, APFS is faster and more reliable than Mac OS Extended.
Finally, if you plan to use the USB drive as a destination for Time Machine backups, choose Mac OS Extended. Time Machine can’t currently back up to an APFS disk and if you select one for use with Time Machine, it will offer to reformat it as Mac OS Extended. You can, however, backup an APFS formatted disk to a Mac OS Extended Time Machine drive.
How to format a USB drive to FAT32 on a Mac
The main reason for formatting a USB drive as Fat32 on a Mac is that you want to be able to use the drive on a Windows PC, as well as a Mac — perhaps to transfer files between the two machines. You may also be preparing the drive for use as, say, a storage device for a media player or to record TV programmes on a TV with a USB port.
The fact that Fat32 can be read from and written to on both Mac and Windows makes it very versatile. However, there is a significant limitation — individual files have a maximum size of 4GB. So, if you’re using the USB drive to store large video files, you may run into trouble. There is a solution, however, exFAT. Unlike FAT32, exFAT doesn’t have a maximum file limit. Better still, it can be read from and written to on any Mac running Mac OS X Snow Leopard or later and on Windows.
To format a USB drive in FAT32 or exFAT:
1. Plug the USB drive into your Mac.
2. Go to Applications>Utilities and launch Disk Utility.
3. Click on the USB drive in the sidebar in Disk Utility.
4. Click Erase in the Disk Utility toolbar.
5. Type in a name for the formatted disk.
6. Click on the Format menu and choose either MS-DOS (FAT32) or ExFAT.
7. Click Erase.
Your USB drive will now be erased and re-formatted as either FAT32 or ExFAT, depending on the format you chose in step 6.
How to manage your drives easily
If you look for a quick and easy way to manage your drives, try using CleanMyDrive 2. With its help, you can drag-and-drop files directly to any drive, clean hidden junk from external drives, and check disk stats. It works for all drives, including USB drives, SSD, SD cards, external hard drives. All the drives will be at hand in the menu bar, so you can get to see types of drives you have and manage them easily. CleanMyDrive is absolutely free to use, so download it on the Mac App Store and enjoy!
It’s very easy to format a USB drive on a Mac using Disk Utility. There are a couple of things you should keep in mind, however. The first is that when you format and disk, you will erase all the data currently on it. So if you need that data, make sure you copy it onto another disk before you start. Secondly, there are several formats to choose from, each with advantages and disadvantage. Use the guide above to help you decide which is right for you.
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This simple guide will teach you How to Format a Flash Drive on Mac. Not only this, we will help you pick the best file system for your usb flash drive that you are planning to use on a Mac.
Majority of 49.4% of desktop and laptop computer users in the world use Windows operating system. In contrast, only 27.4% of users use MacOS, obviously for their apple computer. That’s the reason why most of the flash drives in the market are available in Fat32 or NTFS formats which are the most preferred format for windows.
Although the first one, Fat32 is completely compatible with both MacOS as well as Windows, it has some limitations. Fat32 can store files only up to 4 GB of size. The latter one, NTFS is mostly used on the Windows operating system and not an optimal option for MacOS. Extra work is needed to use NTFS on MacOS. If you want to use your flash drive solely for MacOS, it is highly recommended to format your flash drive.
Here, pop-ups the question: How to format a flash drive on a mac?
Contents
- 1 Before you format a flash drive
- 1.1 Check flash Drive’s File System
- 2 How to format a flash drive on Mac?
Before you format a flash drive
MacOS supports HFS plus file system. HFS stands for Hierarchical File System.
Apple introduced this file system in 1985 to replace the existing Macintosh File System or MFS. HFS filesystem is modified into HFS plus (Modernly called as MacOS Extended). Before you format a flash drive it is suggested to know what file system your flash drive is in.
Check flash Drive’s File System
You don’t need to do anything special to know your flash drive’s file system. There are 2 ways you can do this.
Method 1: Using Finder
Plug in your flash drive. Now open the Finder and look for your USB device. Then right-click on the drive’s name. Select “Get Info” from the list of options opened.
A new window will open. Just to the right of “Format” is your drive’s file system.
Method 2: Using Disk utility app
Open the Disk Utility app from the utility folder available in the application. Your drive will be on the left column of the window. Click on the partition. Here you can check the current format of your flash drive.
If your flash drive’s file system is MS-DOS or ExFAT you can use it as it is without further formatting. But if it is NTFS, format your flash drive to make it completely compatible with MacOS.
How to format a flash drive on Mac?
Disk Utility application in MacOS is the best option to format a flash drive on MacOS. You can launch this app in two ways.
Step 1: Press Space while holding your command button. A search box will open. Type Disk Utility in the search box and press enter. Alternatively, Open the Finder window and select applications on the left sidebar. Navigate to Utilities and then Disk Utilities.
Step 2: Search for your flash drive on the sidebar of the Disk Utility app and select it by clicking on its name.
Step 3: Now Click the “Erase” button which is located just below the title bar of the window which says “Disk Utility”. This will erase your whole drive and make it a single partition.
Here you can change the name of your USB drive if you wish. This name will be visible on other devices as well if you plug your flash drive into them. Just below the Name section, you can see a section called “Format”.
You will need to choose a format option to change your flash drive’s file system. But which format to choose is the big question now! No need to worry. Read the description of each format given below and choose the format of your choice.
Types of filesystems
Mac OS Extended (Journaled)
This format is considered as default file system format of the Mac OS X drives. It also supports OS X Lion, like Versions. This format will allow you to use your flash drive on Mac without any limitations.
With Mac OS Extended (Journaled) format, you can setup OS X startup drive. Make sure you have right files and know how to do it. If you have any issues with a built-in drive you can boot from the external disk. This file system format is highly recommended for MacOS. But you cannot write this flash drive from windows PC once you have formatted it as Mac OS Extended (Journaled). You can read files though.
OS X Extended (Case-sensitive, Journaled)
Go for this type of filesystem if you really need it for some reason. For OS X Extended (Case-sensitive, Journaled), the word “File” is different than “file”. It means it’s case sensitive as the name suggests.
OS X Extended (Case-sensitive, Journaled, Encrypted)
Format Flash Drive To Fat32 Mac
Same as filesystem just mentioned above but of course with encryption.
OS X Extended (Journaled, Encrypted)
To use a flash drive with this filesystem you will have to set up a password & enter it whenever you plug in your drive into any device.
MS-DOS (FAT)
This is just a name for the FAT32 filesystem in Disk Utility application. FAT32 supports to almost all of the operating systems in the world. This allows you to transfer files from one operating system to other. The best thing about this filesystem is its support to video game systems which include Xbox 360 and PlayStation. This filesystem can be called a universal system. The limitation about FAT32 filesystem is it doesn’t allow files which are bigger than 4 GB in size and also you cannot create a startup drive unlike Mac OS Extended (Journaled).
ExFAT
This is a new type of filesystem and it supports MacOS X 10.6.5 and later. It is same as FAT32 but it supports files larger than 4 GB. As this filesystem is relatively new, it does not on relatively older versions of Mac OS X. If you don’t use any older version of the operating system, you can use this type of filesystem.
Use ExFAT for this tutorial if you wish to use your flash drive on windows as well on MacOS.
Step 4: For this tutorial, you can ignore the Scheme option which we use if you wish to boot from your flash drive. Click on erase button to format your flash drive.
Voila! You have formatted your flash drive now. You can eject drive by right-clicking on its name in the left sidebar and click on “Eject”.
Format Flash Drive Mac Fat32
Suggested article: How to Reset SMC on Mac?
I hope this article has helped. If you are still facing problems or have doubts on how to format USB drive on Mac, then simply comment below.
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