What is the best file system for USB or external hard drive on Mac?
Windows and Mac OS X use different file systems. Windows uses NTFS and Mac can't write files to volumes with NTFS format.
The primary filesystem format in OS X is Apple's HFS Plus (or Mac OS X Extended), which is the default used for any newly formatted disk. However, to increase cross-platform support Apple has. Here’s how you format a drive using Tuxera Disk Manager: About Tuxera NTFS for Mac. Tuxera NTFS for Mac and Tuxera Disk Manager work in the latest macOS and OS X 10.11 El Capitan. It’s backwards compatible and runs on all OS X versions starting from Tiger. After finding the file, if you’re going to install Mac OS X El Capitan on your Mac, take a backup of your personal files and folders. Once you’ve that, simply head to the installation and no need to worry more. This is the direct link of the Mac OS X El Capitan DMG file. As soon as you click the link, it will start the process.
So, if you want to use a USB flash drive or an external hard drive with NTFS format on Mac, you should first reformat the devices to the Mac OS Extended file system. It is the best way to ensure full Mac compatibility of a new external hard drive or flash disk.
Usually, FAT32 which can be read and wrote on Mac is recommended for maximum compatibility. And if you need to transfer files larger than 4 GB between Macs and Windows computers, exFAT or MS-DOS (FAT) is better.
How to format USB flash drive or external hard drive for Mac
But how can you format USB flash drive or external hard drive for Mac? Don’t worry! This page will show you two ways to do this job:
Format USB or external hard drive for Mac using Mac disk utility
Format USB or external hard drive for Mac on Windows PC using third-party USB format tool
Now, you can follow these two solutions to format any hard drive, flash drive, USB drive, SSD or any other external storage drive so as to make them work on your Mac now.
Method 1. Format USB or external hard drive for Mac using Mac Disk utility
Windows offers users built-in disk management tool 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.
- 1. Connect the USB or external hard drive to your Mac computer.
- 2. Launch the Disk Utility by clicking 'Applications' > 'Utilities'.
- 3. Locate and click on your USB or external hard drive in Disk Utility and then click on 'Erase'.
- 4. Next to 'Format', click the contextual menu and select 'Mac OS Extended (Journaled)'.
- 5. Reset the drive name and click 'Erase', confirm the operation on the next pop-up window.
- Wait for the process to complete and then you'll get compatible HFS+ file system on your external hard drive or USB, which will make your device compatible and workable on your Mac.
Method 2. Format USB or external hard drive for Mac using third-party USB format tool on a Windows PC
If you need a simpler format tool to format USB or external hard drive to FAT32 to make them work on Mac, you can apply a third-party format tool to format them on Windows PC. EaseUS partition software is a popular disk partition management tool which is available for all hard disk related jobs such as format disk partition, extend system partition, settle low disk space problem.
Now you can try it to format USB or external hard drive on your Windows PC by following the steps below. If you stored important data on the USB or external hard drive, you can try this tool to convert NTFS to FAT32 without formatting.
Step 1: Launch EaseUS Partition Master, right-click the partition on your external hard drive/USB/SD card which you want to format and choose the 'Format' option.
Step 2: Assign a new partition label, file system (NTFS/FAT32/EXT2/EXT3), and cluster size to the selected partition, then click 'OK'.
Step 3: In the Warning window, click 'OK' to continue.
Step 4: Click the 'Execute Operation' button in the top-left corner to review the changes, then click 'Apply' to start formatting your external hard drive/USB/SD card.
After this, you can connect your external hard drive/USB to Mac computer and use it to save data by then.
You set your Mac or Macbook which disk to start up from when more than one startup disk is connected. This works for USB drives including the NinjaStik
For 2018 to 2020 Macs with the Secure Boot T2 Chip, see the 2020 Macbook Pro Boot from USB instructions.
A “startup disk” is a volume or partition of a drive that contains a bootable operating system.
You can set your Mac to automatically use a specific startup volume, or you can temporarily override this choice at startup.
- From the Apple menu choose System Preferences.
- Click the Startup Disk icon in System Preferences, or choose View > Startup Disk.
- Select your startup disk from the list of available volumes.
The next time you start up or restart your computer, your Mac starts up using the operating system on the selected volume.
Temporarily change your startup disk with Startup Manager
Startup Manager allows you to pick a volume to start from while the computer is starting up.
Use these steps to choose a startup disk with Startup Manager:
- Turn on or restart your Mac.
- Immediately press and hold the Option key. After a few seconds, the Startup Manager appears. If you don’t see the volume you want to use, wait a few moments for Startup Manager to finish scanning connected drives.
- Use your mouse or trackpad, or left and right arrow keys to select the volume you want to use.
- Double-click or press the Return key to start up your Mac from the volume you selected.
If you have an optical drive connected to your computer, you can insert an installation disc to see it in Startup Manager. You can also attach FireWire or USB external hard drives that contain an operating system to add to the list of startup volumes.
Startup Manager automatically adds bootable volumes as you connect them.
Restart in OS X from Boot Camp
If you have started up your Mac in Windows using Boot Camp, you can use the Boot Camp system tray to switch your startup disk default back to OS X.
- In Windows, click the Boot Camp icon in the system tray.
- From the menu that appears, choose Restart in OS X.
Start from OS X Recovery
You can also start your Mac from OS X Recovery or Internet Recovery if your Mac was manufactured after 2011.
To start your Mac from the Recovery System, use these steps:
- Start up or restart your computer.
- Hold down the Command and R keys on your keyboard until you see the Apple logo appear onscreen.
If you don’t see a volume listed
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If you don’t see the volume you want to start your computer from, check the following:
- If you’re using an external drive, make sure it’s connected and turned on.
- Make sure you’ve installed an operating system, like OS X or Windows on the drive you’re trying to start from. Volumes that don’t contain a valid operating system aren’t listed in Startup Disk or Startup Manager.
- If you’ve installed an operating system on a drive but it isn’t listed, the volume you’re trying to start from might need repair. If the volume contains OS X, start your computer from OS X Recovery and use Disk Utility to repair the volume, or reinstall OS X on the volume using the Recovery System.
- Depending on the Mac you are using and the version of OS X that is installed, the Recovery System volume (Recovery HD) might not show up in Startup Manager. Press Command-R during startup to start your Mac from the Recovery System.
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For 2018 / 2019 Macbook Pro with the Secure Boot T2 Chip, see the 2018 Macbook Pro Boot from USB instructions.