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Are you looking for a reliable format tool that can format and change the file system of your USB flash drive or external USB drive to make it detectable on Mac computers?

1. A partition is a logical partition in. Stellar Partition Manager is the best partition management utility for Mac OS. The software is meant to manage your Mac partitions including Boot Camp and thus optimizes your hard drive performance. Partition software, free download - Recovery Partition Creator, Mac Free Disk Partition Recovery, IUWEshare.
2. Double-click the Disk Utility icon to launch it on your Mac. Step 2) Select an APFS or HFS partition from the left pane of the Disk Utility window. From the top pane, click the First Aid tab, then click Run. Disk Utility will analyze the partition and repair any logical errors.

Follow through the below guide, you'll learn how to set a suitable file system for your USB flash drive and make it detectable on Mac:

This guide also works to format your external hard drive, SD card, hard drive, etc., devices to recognized on Mac computers.

#1. Pick The Best USB Format Tool for Mac - 3 Top Tools

The first thing that comes up in your mind could be which tool that you can use to format the USB flash drive or external USB drive, right?

Here, in this part, we've collected 3 top recommended USB format tools that can help you fully format and reset the file system of your device to be usable on Mac:

So how to select a suitable tool to format your USB flash drive or external hard drive for Mac? For a quick guide, read the tips here:

1. 1. To format a USB flash drive on Mac, Disk Utility is better a better choice. The terminal is far more complex for beginners.
2. 2. To prepare a USB flash drive ready for Mac on a Windows computer, you can try the third-party format software.

After picking the right USB format tool, you can now move to the next guide and decide which format that you should set for the USB flash drive or external hard drive.

#2. Set a Suitable File System for USB or External USB Drive on Mac

Note that Windows uses NTFS but Mac can't write files to volumes with NTFS format. Mac computer can only read NTFS devices.

Here is a list of macOS supported file systems：

• Apple File System - APFS: Used by macOS 10.13 or later.
• Mac OS Extended: Used by macOS 10.12 or earlier.
• FAT32 and ExFAT: Compatible with both Windows and macOS.

Usually, both APFS and Mac OS Extended file systems are mostly used on Mac hard drives, while the FAT/FAT32 and exFAT are common formats for external storage devices.

So how to set a suitable format for your USB flash drive or external USB drive? Here are our suggestions:

• If the USB drive is less than 64GB, set it as FAT32. If it's larger than 64GB, set its file system as exFAT.
• If you tend to use it as a Time Machine backup disk, format it as Mac OS Extended Journaled.

#3. Format USB Drive for Mac on Mac/Windows Computers

So how do I format a USB stick on a Mac computer? Here, we'll show you how to format your USB flash drive or external hard drive for Mac usage.

Important Note:

• If you want to directly format the USB on your Mac computer, follow Method 1 and Method 2.
• If you want to format USB on your Windows computer and make it usable on Mac, try Method 3.

Method 1. Format USB or External Hard Drive for Mac using Mac Disk utility

Disk Utility offers users similar features in the disk management tool, such as to create, delete, resize, merge and format partitions. You can try the following steps to format USB or external hard drive for Mac with Disk Utility on Mac:

Step 1. Connect the USB or external hard drive to your Mac computer.

Step 2. On the Apple menu, click 'Go' and select 'Applications'.

Step 3. Double-click 'Utilities' in the Applications window.

Step 4. Double-click to open Disk Utility in the Utilities window to open it.

Step 5. Select your USB or external drive, click 'Erase', then click the Format column and select a format for your USB.

For example, Mac OS Extended (Journaled) or MS-DOS (FAT).

Step 6. Reset the drive name and click 'Erase' to confirm the operation on the next pop-up window.

Wait for the process to complete and then you'll get a new Mac compatible file system on your external hard drive or USB, which will make your device detectable and workable on Mac.

Method 2. Format USB Drive for Mac using Terminal Command

Terminal command lines work the same as Disk Utility, however, it's more complex for beginners. If you prefer to use this method, make sure that you follow the steps below carefully:

Step 1. Connect the USB flash drive or external hard drive to your Mac computer.

Step 2. Press cmd + space to run Spotlight, type: terminal, and hit Enter.

Step 3. Type: diskutil list and find out which disk is your USB drive.

Step 4. Type:sudo diskutil eraseDisk FAT32 MBRFormat /dev/disk2 and press Return.

• sudo gives you user right.
• Diskutil calls disk utility program.
• eraseDisk commands to format.
• FAT32 is the file system. (You can also replace it with another file system.)
• MBRFormat tells disk utility to format with a Master Boot Record.
• /dev/disk2 is the location of the USB drive.

Step 5. Wait for the process to complete and then close Terminal.

After this, you can use your USB on Mac in a detectable and readable format now.

Method 3. Format USB or External Hard Drive for Mac on a Windows PC

If you need a simpler format tool to format USB or external hard drive to FAT32 on a Windows computer so to make it work on Mac, you can apply a third-party format tool for help.

EaseUS partition software is a popular disk management tool that is available for resolve all types of partition management jobs such as format disk partition, extend system partition, settle low disk space problems.

It allows you to format a USB or external hard drive on your Windows PC in only 4 simple steps:

• Right-click the external drive or USB you intend to format and choose 'Format'.
• Set the Partition label, File system (NTFS/FAT32/EXT2/EXT3/EXT4), and Cluster size, then click 'OK'.
• Click 'OK' to continue.
• Click the 'Execute Operation' button and click 'Apply' to format the hard drive partition.

After this, you can connect the formatted external hard drive or USB drive to your Mac computer and use it to save data by then.

You May Also Interest In:

Note that if you want to transfer a USB flash drive from NTFS to FAT32 without formatting it as you have saved some important data on it, EaseUS Partition Master can help.

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Pick a Right USB Format Tool and Format Your USB Drive for Mac Now

On this page, we presented 3 reliable USB format tools for you to format a USB flash drive or external hard drive on Mac or Windows computers, making the storage device usable on Mac.

For Mac beginners, Disk Utility is good for you to try. As for Windows users who want to format a USB drive for Mac, EaseUS partition manager software - Partition Master worths your trust.

After picking the right tool, you can just revert to the right tutorial, take action to format your drive usable for Mac computer now.

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Disk Utility User Guide

Partitioning a disk divides it into individual sections known as containers.

However, with APFS, you shouldn’t partition your disk in most cases. Instead, create multiple APFS volumes within a single partition. With the flexible space management provided by APFS, you can even install another version of macOS on an APFS volume.

Important: If you’re partitioning your internal physical disk because you want to install Windows, use Boot Camp Assistant instead. Do not use Disk Utility to remove a partition that was created using Boot Camp Assistant. Instead, use Boot Camp Assistant to remove the partition from your Mac.

Add a partition

Important: As a precaution, it’s best to back up your data before creating new partitions on your device.

1. In the Disk Utility app on your Mac, select a volume in the sidebar, then click the Partition button in the toolbar.

   If Disk Utility isn’t open, click the Launchpad icon in the Dock, type Disk Utility in the Search field, then click the Disk Utility icon .

   If you have multiple storage devices connected to your Mac, make sure you select a volume that’s on the device you want to partition.

   When you select a volume that already has data on it, the pie chart shows a shaded area representing the amount of data on the volume and an unshaded area representing the amount of free space available for another volume. Disk Utility also shows whether the volume can be removed or resized.

   Note: If you see a small volume with an asterisk, the partition is smaller than can be represented at the correct scale in the chart.

2. Click the Add button below the pie chart.

3. Read the information in the dialog that appears, then click Add Partition.

   Note: If you click Add Volume instead, you can click the Add button to create an additional APFS volume in the container, or click Cancel to return to the Disk Utility window without making any changes to the storage device.

4. Type a name for the volume in the Name field.

   For MS-DOS (FAT) and ExFAT volumes, the maximum length for the volume name is 11 characters.

5. Click the Format pop-up menu, then choose a file system format.

6. Enter the size or drag the resize control to increase or decrease the size of the volume.

7. Click Apply.

8. Read the information in the Partition Device dialog, then click Partition.

9. After the operation finishes, click Done.

After you partition a storage device, an icon for each volume appears in both the Disk Utility sidebar and the Finder sidebar.

Delete a partition

WARNING: When you delete a partition, all the data on it is erased. Be sure to back up your data before you begin.

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1. In the Disk Utility app on your Mac, select a volume in the sidebar, then click the Partition button in the toolbar.

   If Disk Utility isn’t open, click the Launchpad icon in the Dock, type Disk Utility in the Search field, then click the Disk Utility icon .

2. In the Apple File System Space Sharing dialog, click Partition.

3. In the pie chart, click the partition you want to delete, then click the Delete button .

   If the Delete button is dimmed, you can’t delete the selected partition.

4. Click Apply.

5. Read the information in the Partition Device dialog, then click Partition.

6. After the operation finishes, click Done.

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Erase a partition

1. In the Disk Utility app on your Mac, choose View > Show All Devices, then select the container you want to erase in the sidebar.

   If Disk Utility isn’t open, click the Launchpad icon in the Dock, type Disk Utility in the Search field, then click the Disk Utility icon .

2. Click the Erase button in the toolbar.

   If the Erase button is dimmed, you can’t erase the selected container.

3. Type a name for the volume in the Name field.

4. Click the Format pop-up menu, then choose a file system format.

5. After the operation finishes, click Done.

Enlarge a partition on a storage device

If you have multiple partitions on a device and one of them is running out of space, you may be able to enlarge it without losing any of the files on it.

To enlarge a volume, you must delete the volume that comes after it on the device, then move the end point of the volume you want to enlarge into the freed space. You can’t enlarge the last volume on a device.

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WARNING: When you delete a volume or partition, all the data on it is erased. Be sure to back up your data before you begin.

1. In the Disk Utility app on your Mac, select a volume in the sidebar, then click the Partition button .

   If Disk Utility isn’t open, click the Launchpad icon in the Dock, type Disk Utility in the Search field, then click the Disk Utility icon .

2. In the Apple File System Space Sharing dialog, click Partition.

3. In the pie chart, select the partition you want to delete, then click the Delete button .

   If the Delete button is dimmed, you can’t delete the selected partition.

4. Click Apply.

5. Read the information in the Partition Device dialog, then click Partition.

6. After the operation finishes, click Done.