To put in simple words, if you want to share the external hard drive between Macintosh and Windows PC, you need to format an external hard drive for the respective system. Hard drives for Windows PC are formatted with NTFS by default, while hard disks for Mac are formatted with HFS+. Right-click on the external hard drive and click Format. Choose a format under File System. By default, Windows computers will choose NTFS (New Technology File System) for you because that's the native Microsoft filing system. But if you want the external hard drive to also work on a Mac, you should choose exFAT.
Updated on November 23rd, 2020
This article shows you how to format an external hard drive via different methods, and you can follow these methods to format external hard drive for PC, Mac or Linux.
Does mac select cost money. External hard drive is popular storage device and it can be used to store all kinds of digital information such as images, documents, apps, emails, etc. You can connect external hard drive to computer via USB cable and then transfer data with internal hard drive. Regardless of the brand or model, the first thing you may need to do after purchasing an external hard drive might be partitioning and formatting it.
Formatting external disk can be done via various methods and it can be formatted to a range of file system so that you can use the disk under different operating system platforms. The formatting process removes all data on the partition and thus causes data loss. You should create a backup for important data before formatting if the disk contains significant files.
A brand-new external hard drive is usually partitioned into s single partition with NTFS file system. Still many users would like to format the external hard drives and people do that due to various reasons:
- Format external hard drive to required file system. The brand-new disk you purchase might not be formatted to the file system type you need. To change file system type, formatting should be done.
- To quickly remove content from external hard drive. Quick formatting is able to format a partition within seconds, and all data on the volume will be deleted. This is a good solution to delete data and free up disk space.
- To optimization performance for disk. Formatting can clear data fragmentation quickly and easily.
- Remove virus or malware. Since external hard drive might be used on many computers, it tends to infect virus. Many users would format it to clear virus and avoid more damages.
- To fix file system errors. Sometimes external hard drive may become RAW or reports errors like 'The file or directory is corrupted and unreadable', you can fix these errors by formatting the volume after file recovery.
Step 1: Connect your external hard drive with your computer and open Windows Explorer to check if it can be recognized.
Note: if you have stored data to the drive, please back it up before formatting the disk.
Step 2: Right-click on the external hard disk and select 'Format' option from context menu.
Step 3: On the formatting window, select Quick Format option, choose file system format, and click Start. Also you can enter a name for the drive under Volume Label.
Step 4: System prompts formatting removes all data and asks confirmation for the action. Click OK and formatting starts.
This method formats external hard drive using Windows built-in utility Disk Management. If your external hard drive does not show up in Windows Explorer, you can follow this instruction to complete the formatting.
Step 1: Access Windows 10 Disk Management by right-clicking Start menu and selecting 'Disk Management' item from the list.
Step 2: Locate the external hard drive in Disk Management and check its status.
If there is not partition on the disk or the disk is marked with Not Initialized, you cannot format it directly.
Hfs for mac. The next step assumes the external hard drive is full of unallocated space and shows how to format it.
Step 3: Right-click on unallocated disk space and select New Simple Volume from the context menu.
Step 4: You can see the 'Welcome to the New Simple Volume Wizard' now. Click Next button to proceed.
Step 5: The wizard will ask you to select set partition size, drive letter, file system, format method, etc. step by step. You can follow suggested option to complete the process.
Want to use external hard drive under both Windows PC and Mac? In this case, you should consider the hurdle that these operating systems support different filesystems. The default file system in Windows is NTFS, while Mac OS users HFS. The filesystem that is compatible with Windows and Mac is exFAT and FAT32.
exFAT VS FAT32, which one should be chosen for Max and PC? It is recommended to use exFAT by many experts, because FAT32 has a maximum 4GB file size limit and exFAT does not has such limitation, and exFAT also performs better than FAT32. FAT32 is also a good choice if you do not store files whose single size does not exceed 4GB.
External Hard Drive For Mac And Windows Formats
FAT32 and exFAT file system is supported by Windows though, they are originally designed for removable storage devices like USB flash drive, SD card. When you try to format an external hard drive which has very large capacity in Windows, FAT32 or exFAT may not be available. Also, some users may encounter error 'The volume is too big for FAT32'. In this section, we'll use a free Windows partition manager to complete the formatting task.
Eassos PartitionGuru is free Windows partition manager and it supports various file systems such as FAT32, NTFS, exFAT, Ext2, Ext3, Ext4, etc. and the formatting process is very simple.
Step 1: Install and launch Eassos PartitionGuru from your computer and find the external disk you want to format.
Step 2: Right-click on the partition to be formatted and select 'Format Current Partition' option from context menu.
Step 3: Select Filesystem type from the drop-down list and click Format button.
Step 4: Click Yes button when Eassos PartitionGuru asks confirmation for the operation.
This part of this guide applies to format external or portable hard drive to Ext2, Ext3 or Ext4 file system under Windows 10/8/7, so that the drive can be used under Linux.
Step 1: Connect the portable drive to computer and launch Eassos PartitionGuru. Then you can see the drive is displayed in the software.
Step 2: Select the partition you want to format to Linux file system, and click 'Format' button from toolbar.
Step 3: The Format window pops up and you can select Linux filesystem from Ext4, Ext3 and Ext3 from drop-down list. Then click Format button.
Step 4: Click Yes button to continue and formatting will be completed within a couple of seconds.
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.
Format A Mac External Hard Drive For Windows
This article shows you how to format an external hard drive via different methods, and you can follow these methods to format external hard drive for PC, Mac or Linux.
Does mac select cost money. External hard drive is popular storage device and it can be used to store all kinds of digital information such as images, documents, apps, emails, etc. You can connect external hard drive to computer via USB cable and then transfer data with internal hard drive. Regardless of the brand or model, the first thing you may need to do after purchasing an external hard drive might be partitioning and formatting it.
Formatting external disk can be done via various methods and it can be formatted to a range of file system so that you can use the disk under different operating system platforms. The formatting process removes all data on the partition and thus causes data loss. You should create a backup for important data before formatting if the disk contains significant files.
A brand-new external hard drive is usually partitioned into s single partition with NTFS file system. Still many users would like to format the external hard drives and people do that due to various reasons:
- Format external hard drive to required file system. The brand-new disk you purchase might not be formatted to the file system type you need. To change file system type, formatting should be done.
- To quickly remove content from external hard drive. Quick formatting is able to format a partition within seconds, and all data on the volume will be deleted. This is a good solution to delete data and free up disk space.
- To optimization performance for disk. Formatting can clear data fragmentation quickly and easily.
- Remove virus or malware. Since external hard drive might be used on many computers, it tends to infect virus. Many users would format it to clear virus and avoid more damages.
- To fix file system errors. Sometimes external hard drive may become RAW or reports errors like 'The file or directory is corrupted and unreadable', you can fix these errors by formatting the volume after file recovery.
Step 1: Connect your external hard drive with your computer and open Windows Explorer to check if it can be recognized.
Note: if you have stored data to the drive, please back it up before formatting the disk.
Step 2: Right-click on the external hard disk and select 'Format' option from context menu.
Step 3: On the formatting window, select Quick Format option, choose file system format, and click Start. Also you can enter a name for the drive under Volume Label.
Step 4: System prompts formatting removes all data and asks confirmation for the action. Click OK and formatting starts.
This method formats external hard drive using Windows built-in utility Disk Management. If your external hard drive does not show up in Windows Explorer, you can follow this instruction to complete the formatting.
Step 1: Access Windows 10 Disk Management by right-clicking Start menu and selecting 'Disk Management' item from the list.
Step 2: Locate the external hard drive in Disk Management and check its status.
If there is not partition on the disk or the disk is marked with Not Initialized, you cannot format it directly.
Hfs for mac. The next step assumes the external hard drive is full of unallocated space and shows how to format it.
Step 3: Right-click on unallocated disk space and select New Simple Volume from the context menu.
Step 4: You can see the 'Welcome to the New Simple Volume Wizard' now. Click Next button to proceed.
Step 5: The wizard will ask you to select set partition size, drive letter, file system, format method, etc. step by step. You can follow suggested option to complete the process.
Want to use external hard drive under both Windows PC and Mac? In this case, you should consider the hurdle that these operating systems support different filesystems. The default file system in Windows is NTFS, while Mac OS users HFS. The filesystem that is compatible with Windows and Mac is exFAT and FAT32.
exFAT VS FAT32, which one should be chosen for Max and PC? It is recommended to use exFAT by many experts, because FAT32 has a maximum 4GB file size limit and exFAT does not has such limitation, and exFAT also performs better than FAT32. FAT32 is also a good choice if you do not store files whose single size does not exceed 4GB.
External Hard Drive For Mac And Windows Formats
FAT32 and exFAT file system is supported by Windows though, they are originally designed for removable storage devices like USB flash drive, SD card. When you try to format an external hard drive which has very large capacity in Windows, FAT32 or exFAT may not be available. Also, some users may encounter error 'The volume is too big for FAT32'. In this section, we'll use a free Windows partition manager to complete the formatting task.
Eassos PartitionGuru is free Windows partition manager and it supports various file systems such as FAT32, NTFS, exFAT, Ext2, Ext3, Ext4, etc. and the formatting process is very simple.
Step 1: Install and launch Eassos PartitionGuru from your computer and find the external disk you want to format.
Step 2: Right-click on the partition to be formatted and select 'Format Current Partition' option from context menu.
Step 3: Select Filesystem type from the drop-down list and click Format button.
Step 4: Click Yes button when Eassos PartitionGuru asks confirmation for the operation.
This part of this guide applies to format external or portable hard drive to Ext2, Ext3 or Ext4 file system under Windows 10/8/7, so that the drive can be used under Linux.
Step 1: Connect the portable drive to computer and launch Eassos PartitionGuru. Then you can see the drive is displayed in the software.
Step 2: Select the partition you want to format to Linux file system, and click 'Format' button from toolbar.
Step 3: The Format window pops up and you can select Linux filesystem from Ext4, Ext3 and Ext3 from drop-down list. Then click Format button.
Step 4: Click Yes button to continue and formatting will be completed within a couple of seconds.
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.
Format A Mac External Hard Drive For Windows
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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