There are many reasons why you may want to format an external HDD or small flash drive. For instance:

  • You brought a new unformatted hard drive
  • If the drive is not properly formatted, it won’t work
  • You want to use your external hard drive in both MAC, PC and Linux (use FAT32)
  • Before you sell your SDcard or Pendrive, you should format it to erase its data
  • Your camera’s SD card (FAT32) can only hold a file up to 4GB file. To get larger file size format it to exFAT.

Insert the flash drive or hard drive you want to format for Windows compatibility. Go to the Applications folder on your Mac’s hard drive, then go to the Utilities folder, and launch Disk Utility. Select the drive you want to format. Warning: the following steps will delete any info you currently have on the drive. Click the Erase button.

Select a file format. Click the “Format” drop-down menu and select one of the following file formats: Mac OS Extended (Journaled): Compatible with Mac only. MS-DOS (FAT): Only for drives 32 GBs or smaller. Windows and Mac compatible. ExFAT: No size limits. Windows and Mac compatible. How to encrypt USB flash drive with Bitlocker on Mac? Step 1: Insert USB flash drive into Mac computer. Step 2: Download, install and launch M3 Bitlocker Loader for Mac. Step 3: Click 'Encrypt' button in toolbar. Step 4: Select the partition which you want to encrypt and click Encrypt. Step 5: Enter the password. Step 6: Save the recovery key.

Warming: Formating a drive, also erase its data. Although you can still get it back, but it’s much harder after formatting. So if you can’t afford losing you data, take backup.

Which Format to choose?

Choosing a right file system is a bit tricky, so here are some pros and cons of all file system.

NTFS: This is windows propriety file system. Most external drives come preformatted in NTFS so that they can be used easily with Windows. However, NTFS drives are read only in MAC, but you can get write access by using software like NTFS-3g. It also works in Linux. And to support NTFS on Android use Stick mount or Paragon NTFS, HFS and exFAT.

HFS+: This MAC propriety file system and is used in iOS and MAC. If you format your external hard drive to HFS, you can use it on MAC and Linux (by removing journaling). However, to use it on Windows you can HFS explorer (read only).

ext4: This is a default file system for linux OS (including Raspberry Pi). To read an ext4 drive on Windows, you can Ext2Read and OSXfuse for MAC. However, I have not really use this format much, so we just skip it.

FAT32: This oldest file system and work with all OS i.e. Windows, MAC, Linux, Android, even TV, and PS3 etc. This is why it’s used in all small flash drive. Although it lacks all modern features and comes with 4 GB limit for single file size.

exFAT: is the extended version of exFAT. It works fine with Windows and MAC (all the modern version). For Android, you can use Stick mount app (root needed). However being a windows propriety file system, it does not play well in open source environment. But unlike FAT32, it does not have 4GB limit for single file size. Thus making it ideal for SDcards of the high-end camera.

How to Format an External Hard drive or Pen drive

Now that we know the good and bad about every file system, let see how to format a drive in Windows, MAC, and Linux.


Formatting a drive on Windows is quite simple. Plug in your external HDD to the USB port of your computer> then go to my computer > find your external drive > right-click it > and select format.

A new window will open, select the desired file system, keep the allocation unit size to default and check mark quick format (or it will take more time). Once done hit the format button and that’s it. Within seconds, you will have your drive in the new format.

Note: While formatting a pen drive you will see FAT32, exFAT, and NTFS as the available file system. However for external HDD you won’t see the FAT32 (windows don’t suggest fat32 for bigger drives) However to get other format option you can use third-party software.


Start by connecting your external HDD to MAC’s USB port. Under the finder men, go to Go > utilities > Disk Utility or type disk utility in the spotlight and hit enter.

Once under disk utility. Select your external HDD on the left side and then select partition option.

Now in the Partition area, click under Partition Layout and select 1 Partition. Then, click on Options. A new window will open, here select Master Boot Record and then click Ok.

Now in the right side of windows, give a name to your drive, from the drop-down select desired file system format. Make sure the size is set to an entire volume of your external drive. And once done, click on Apply.

Note: Here you will also see an option to format a large hard drive to FAT32 which is not available in Windows.

See this animated gif (Imgur)


Unlike windows and MAC, Linux does not a have built-in partition tool. So, you will have ti install a GUI tool called GParted and then plug in your external drive in the computer.

Open your terminal and type in the following command to install GParterd.

sudo apt-get install gparted

Once installed, type the following command to launch the program.

sudo gparted

A new window will open. Click on the top right side, select the volume you want to format.

How To Format Flash Drive For Mac And Pc

Once you see the volume you want to format, right click on the block and select format > choose the file system you want > and click OK to confirm.

Note: Since, I am running Linux in a virtual machine, in final step my Format to option is not highlighted, But in your case, you will be able to click it and select the file system you to format in. To see the final step, I suggest you check out this howtogeek article.


Say you don’t have any computer with you, now can you still format your external HDD? Well, if you have an Android (ROOT) then yes, you can still format your drive to popular formats like NTFS and HFS.

To do this, install Paragon exFAT, NTFS & HFS+ from Play store. The main function of this application is to mount NTFS or HFS formatted HDD on Android, but there is another useful option hidden under settings — i.e. formatting a drive.

Once installed, open the app, mount your drive and then go to the settings, There select the new file system for your drive, give it a name and hit format.

> Erase Data > Two Ways to Format USB Flash Drive on PC/Mac

by Shirly Chen, 2018-04-17

The best way to reset an USB flash drive to factory status or fix logical error is formatting the USB flash drive. Do you know how to format USB flash drive? For most of us, it is very simple. But, are you sure you have selected the right method to format the USB flash drive? Maybe, you are wrong. In this article, we will show you two methods to format USB flash drive on PC/Mac. You can select the right one to format your USB flash drive.

1. Format USB flash drive with system utility

If you are a Windows user, you can connect the USB flash drive with your PC. Then open 'My Computer', find the USB flash drive, right-click the icon of the USB flash drive, you can see the format option. Then you can easily format the USB flash drive with this tool.

If you are a Mac user, you just need to open Mac Disk Utility. Then connect the USB flash drive with your Mac. You also can quickly format the USB flash drive with this system utility.

This is the easiest way to format an USB flash drive on PC or Mac. But, the data which is formatted in the USB flash drive still can be recovered by free data recovery software. It means you or anyone else can easily recover the formatted or lost data from the USB flash drive which has been formatted by system utility. It is not safe if you are going to sell, donate or lend your USB device to other people.

2. Format USB flash drive with DoYourData Super Eraser

DoYourData Super Eraser is a super data erasure & disk formatting tool for both Windows OS and Mac OS. It can help you quickly format USB flash drive and permanently erase data on the USB flash drive. It means once the USB flash drive is formatted by DoYourData Super Eraser, all data information on the USB flash drive will be permanently erased, can’t be recovered by any data recovery method.

Format Flash Drive For Mac And Pc 2018

>Download DoYourData Super Eraser here:

How to use DoYourData Super Eraser to format USB flash drive on PC or Mac? Actually, it is pretty simple. First of all, just run this data erasure software from Launchpad (if you are a Mac user). Then follow the steps below to format your USB flash drive and permanently erase all data on the USB flash drive.

Step 1: Connect the USB flash drive with your computer. Then run DoYourData Super Eraser on your computer.

>Step 2: Choose mode 'Wipe Hard Drive'.

>Step 3: Select the USB flash drive and click on 'Wipe Now' button to format and erase the USB flash drive.

>Once the process gets finished, the USB flash drive will be formatted and all data information on the USB flash drive will be permanently erased. Pease back up your important data before you use DoYourData Super Eraser to format your USB flash drive.

>The two methods above can help you easily format USB flash drive. We strongly recommend you to use the second method to format the USB flash drive before you sell, donate, give away or dispose it. It is the safe way to format the USB flash drive and permanently erase private data.

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