An incompatible file system, faulty permission settings, and unexpected formatting error are all likely to cause your external hard drive to show up as 'Read Only' on your Mac. Luckily, there are solutions to these problems, either by formatting the device, changing settings, or repairing your device. Besides, if you get your data lost during the problem-solving process, you can retrieve your data with EaseUS Data Recovery Wizard. Try these tips without worries!
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Don't worry when your external hard drive displays as read-only on Mac. This page includes 3 reliable solutions that can assist you in removing the 'read-only' error from your external hard drive, making it readable again on Mac. Pick up any method below to make your device accessible without losing any data now:
Workable Solutions | Step-by-step Troubleshooting |
---|---|
Fix 1. Reformat External Hard Drive | Open 'Applications' > 'Utilities' > Launch 'Disk Utility' to 'Erase' external drive > Restore formatted data..Full steps |
Fix 2. Ignore Permissions | Right-click external drive > 'Get Info' > 'Sharing & Permissions' > Check 'Ignore ownership on..'..Full steps |
Fix 3. Repair Drive Errors | Open Disk Utility > Select the external hard drive and click 'First Aid' > Click 'Run'..Full steps |
SymptomsThe External Hard Drive Shows Up as 'Read Only' on Mac, Help!
'Hi there, do you know how to make the external hard drive accessible again when it shows as 'Read Only' on Mac computer? I'm having this problem that my Seagate external hard drive suddenly turned to read-only this morning when I connected it to Mac. I could only read and view saved data on the drive. But get no access to use the data on my external hard drive. If you have any clues to get permissions to access the read-only external hard drive on Mac, please tell me. Thanks very much.'
If you right-click your external storage device, select 'Get Info', and see 'You can only read' at the bottom of the info window, you are encountering one of the commonest problems with an external hard drive. When your external hard drive or other external storage devices show up as 'Read Only' on your Mac, you can:
- Open the drive and view the files
- copy files from the external storage drive
You can't:
- Copy files to the device
- Delete files from the external drive
When you can't use your external storage devices normally, it could be quite annoying and frustrating for the problem not only represents a threat to your work efficiency but also shows the possibility of data loss.
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ReasonsWhy Is Your External Hard Drive Read-Only on Mac
Why can you only read the external hard drive that is connected to your Mac? There are three possible reasons.
The File System Is NTFS
Right-click your hard disk and select 'Get Info'. If you find your external hard drive is NTFS format, that's what the cause is. The incompatibility of the file system is the main cause of the error-external hard drive 'Read Only' on Mac. NTFS is a file system that is optimal for Windows-based computer. Although the Mac operating system allows you to read the files on external hard drive, you can't write files to it because the way that NTFS writes data to the device is incompatible with the way of macOS doing it. (Go to the Fix.)
The Permission Settings Is Not Ignored
An external hard drive is subject to the access permission set up by OS X for all files and folders on the system. When you use the device on another computer with a different OS, the permission settings with it may not be recognized or prevent access to the files on the hard disk. (Go to the Fix.)
The Hard Drive has Formatting Errors
Another common cause for the external hard drive 'Read Only' problem on Mac is the formatting errors of the storage device itself. If you see a warning says the device is only being mounted in read-only mode while connecting, your hard disk is diagnosed to have formatting errors that prevent you from writing files to it. (Go to the Fix.)
Identify the cause that leads to the 'Read Only' error on your Mac from the information above, then follow the corresponding solution to solve the problem with ease.
FixesHow Can You Solve the External Hard Drive 'Read-only' Problem on Your Mac
Based on different reasons, there are three solutions to the problem.
Fix 1: Reformat the External Hard Drive
If your external hard drive is read-only on your Mac due to its NTFS file system, you can easily fix it by reformatting the device to a Mac-compatible format with the built-in Disk Utility on Mac. Before that, remember to back up your external hard drive quickly with a highly-efficient data backup software since the formatting will erase all the files on the device.
Step 1: Launch 'Disk Utility'.
- Head to 'Applications' > 'Utilities'.
- Or tap 'Command + Space' and type Disk Utility.
Step 2: In the list of available drives on the left, choose the problematic external hard drive. Then click the 'Erase' option in the main window.
Step 3: Choose a proper file system and rename your hard disk. (Both APFS and Mac OS Extended file system are Mac-exclusive. Thus, if you want your external hard drive to be both Mac and PC compatible, choose MS-DOS, also known as FAT, or ExFAT instead.)
Step 4: Click Erase to reformatting your external hard drive.
Wait for the reformatting process to complete and then go to the information window, this time you will see the 'You can only read' has changed to 'You can read and write', which means you can read and write the drive on your Mac normally.
Generally speaking, when a storage device shows up as read-only, you can still copy files off of it. If you cannot view or see all saved data on the drive, don't worry. After you format it, you can use the Professional Mac hard drive recovery software - EaseUS Data Recovery Wizard for Mac to get back your lost data on the drive with simple clicks:
Step 1. Select the disk location (it can be an internal HDD/SSD or a removable storage device) where you lost data and files. Click the 'Scan' button.
Step 2. EaseUS Data Recovery Wizard for Mac will immediately scan your selected disk volume and display the scanning results on the left pane.
Step 3. In the scan results, select the file(s) and click the 'Recover Now' button to have them back.
Fix 2: Ignore Permissions
If you are sure the problem is caused by the permission settings, you just need to ignore the permissions to solve the 'Read Only' external hard drive problem on your Mac.
Step 1: Right-click your external hard drive shown on your Mac and select 'Get Info'.
Step 2: Expand the 'Sharing & Permissions' section, then click the lock to authenticate.
Step 3: Check 'Ignore ownership on this volume'.
Fix 3: Check and Repair Hard Drive errors
If there is formatting error on your external hard drive that makes the device read-only, you can use Disk Utility to check the errors and repair the external storage device.
Step 1: Go to 'Disk Utility'.
- Head to 'Applications' > 'Utilities'.
- Or tap 'Command + Space' and type Disk Utility.
Step 2: Highlight the read-only external hard drive, click 'First Aid' in the top center, then click 'Run'.
Summary :
Want to format an external hard drive for Mac and Windows PC? Do you know how to do this work easily? This MiniTool article will show you specific methods to make external hard drive compatible with Mac and PC, which are easy and safe to complete.
Quick Navigation :
As we know, external hard drives are widely used to backup data or interchange files among different computers. Well, is there an external hard drive that could be shared between Mac and Windows PC? Of course, there is. Actually, most external hard disks could be compatible with Mac and PC as long as you format them correctly.
Why Need to Format External Hard Drive for Mac and PC
To put it simply, if you want to share external hard drive between Mac and PC, you need to format an external hard drive for Mac and PC.
Currently, hard drives for Windows PC are always formatted with NTFS, while hard disks for Mac are formatted with HFS+. However, when we connect a NTFS formatted disk to Mac, Mac OS X doesn't allow us to write files to the drive neither edit files, though it can read a NTFS drive. Similarly, Windows OS will ask us to format the HFS+ formatted drive when we connecting such a disk, let along edit files saved on HFS+ formatted hard disks unless we resort to third party programs.
But luckily, there are file systems well supported by both Mac and Windows PC, and they are FAT32 (it might be called MS-DOS on Mac) and exFAT. As long as we format the external hard drive to one of these 2 file systems, it can be shared between Mac and Windows.
Further Reading
Both FAT32 and exFAT have advantages and disadvantages.
FAT32: FAT32 works with all versions of Windows, Mac OS, Linux, game consoles, etc.
However, single files on a FAT32 drive can't be larger than 4GB. If your external drive saves files larger than 4GB or you plan to save larger files to this drive, converting to FAT32 is not recommended.
In addition, a FAT32 partition must be not more than 32GB if you create it in Windows Disk Management. Of course, there is free partition manager that can help create a FAT32 volume up to 2TB, which also functions correctly.
exFAT: exFAT has very large file size and partition size limits, which means it's a good idea to format your external hard drive to exFAT.
Nevertheless, a lot of users complained that exFAT is slow, and they highly suggest using FAT32 if you can avoid file size constraints.
Three Options for Accessing NTFS Drives on Mac
Paid Third-Party Drivers
Some paid third-party NTFS drivers for Mac can be used to access NTFS drives on Mac. They work well and they have better performance than the free solutions which will be mentioned in the following part. Paragon NTFS for Mac is such a driver.
Besides, you can also use the paid third-party file system converters to convert NTFS to FAT32 or exFAT which are compatible with both Mac and PC. MiniTool Partition Wizard is one representative.
Free Third-Party Drivers
FUSE for macOS is a free and open-source NTFS driver that can enable write support. But, this solution is slower relatively. And the automatically mounting NTFS partitions in read-write mode can be a security risk for your Mac computer.
Apple’s Experimental NTFS-Write Support
The Mac OS has an experimental support for writing to NTFS drives. Usually, it is disabled by default and needs some messing around in the Mac terminal to enable it.
It doesn’t work properly all the time and could lead to potential issues with your NTFS file system. For example, it had corrupted data before. Thus, we don’t suggest using this tool and we believe it is disabled by this reason.
Here, we recommend using the paid third-party tools since they are easy-to-use and can do good work for you.
Then, we will introduce these three options for you in the following content.
The Best Paid Third-Party Driver: Paragon NTFS for Mac
Paragon NTFS for Mac can write, edit, delete, copy, or move files on NTFS volumes from your Mac computer. It offers a 10-day free trial. If you want to use it all the time, you need to pay for it.
With it, you don’t have to fiddle with terminal commands to mount partitions manually. Additionally, it can mount partitions automatically and safely. More importantly, it can code with the potential corruption. If you purchase a Seagate drive, you can even get a free download of Paragon NTFS for Mac.
All in all, it does its works well and gives you good user’s experience.
The Best Free Third-Party Drivers: FUSE for macOS
FUSE for macOS is a free solution to access NTFS on Mac. But it is less secure.
If you want to make automatically mount NTFS partitions in read-write mode on Mac, you need to temporarily disable the System Integrity Protection and replace one of Apple’s built-in tools with a binary that is more vulnerable to attack. Thus, your Mac is in danger when using this driver.
However, you can use it to manually mount NTFS partitions in read-write mode if you never mind using the Terminal. This will be safer, but you need to do more work. You can go to google the steps and see how complex they are.
Apple’s Experimental NTFS-Writing Support: Don’t Do This, Seriously
Although we mentioned this method in our article, we still don’t recommend it because it is the least tested. It is just for educational purposes, and it is available on Mac OS 10.12 Sierra. Perhaps, it will be unstable forever.
How to Quickly Format External Hard Drive for Mac and PC without Losing Data
Another way to access NTFS drive on Mac is to convert the NTFS/HFS+ to FAT/exFAT. Then, the drive can be used on both Mac and PC.
There should be some important data on the drive. To keep it safe, you can choose this best NTFS/HFS+ to FAT/exFAT converter: MiniTool Partition Wizard.
How to Convert NTFS to FAT32 or exFAT Without Data Loss
To format hard drive for Mac and Windows without data loss, we suggest using MiniTool Partition Wizard and its 'Convert NTFS to FATS32' function. If you are a personal user, you can try its Professional Edition.
Step 1: Run MiniTool Partition Wizard
Download this software to your computer. Then, you can open the software and input the license key to the pop-out window to get its Professional Edition.
Step 2: Convert NTFS to FAT32 with This Software
After running the program successfully, we can see its main interface as follows:
Here, please select the NTFS partition of external hard drive and choose 'Convert NTFS to FAT' feature from the left action pane. If there is more than one NTFS partition, convert all of them one by one.
At last, click 'Apply' button to make the change executed.
When MiniTool Partition Wizard shows it applies the change successfully, the original NTFS will finally become a FAT32 partition.
By this way, you can easily format an external hard drive for Mac and PC without losing any data. Then, you can share external hard drive between Mac and PC
You Can Convert NTFS to exFAT in 3 Steps
However, if you want to convert NTFS to exFAT to make external hard drive compatible with Mac and PC, 3 steps are required.
Step 1: Transfer Data out from External Hard Drive
You can choose to copy and paste those files to other external devices or internal hard disk of Windows, but it will cost much time. Instead, you can use MiniTool Partition Wizard Free Edition to create a copy for your external drive, which is faster.
If there is only one NTFS partition on external hard drive, refer to the tutorial Copy Partition to get instructions. However, if there is more than one NTFS partition, view Copy Disk to get specific operations.
Step 2: Create exFAT Partition with MiniTool Partition Wizard
The Free Edition of this software also enables you to do this job.
Firstly, you need to delete the partition by using this software. Just open the software to enter its main interface. Then, choose the target partition and click 'Delete Partition' from the left action pane. After that, you should click 'Apply' to keep this change.
Secondly, the target partition will become unallocated. Here, you need to choose that partition and click on 'Create Partition' from the left action pane.
Thirdly, you will see a pop-out window. Here, you can choose 'exFAT' from the 'File System' setting option. At the same time, you can also set some other parameters for this partition, including 'Partition Label', 'Drive Letter', 'Size And Location'. After that, please click on 'OK'.
Fourthly, you will go back to the main interface. Then, please click on 'Apply' to save these changes.
Finally, an exFAT partition will be created on your external hard disk so that it could be shared between Mac and Windows PC
Step 3: Transfer Data back to External Drive
If you want to share files that you have backed up between Mac and PC, now please transfer these files back to external hard drive.
How to Convert HFS+ to FAT32 or exFAT without Losing Data
Besides, you can format an external hard drive for Mac and Windows by converting HFS+ to FAT32 or exFAT without losing any data.
Step 1: Backup Data in HFS+ Partition on Mac
Just transfer all useful files out from the external hard drive to other devices on Mac. Of course, if you have a backup already, ignore this step.
Step 2: Create a FAT32 or exFAT Partition on Windows PC
Dirt for mac os torrent. Some people may ask why create such partitions on Windows rather than Mac. That is because there are cases reporting FAT32 (MS-DOS) or exFAT partitions created on Mac did not work well on Windows.
Please skip to Solution 1: Format External Hard Drive to FAT32 to get steps to create a FAT32 partitions or go back to Step 2: Create exFAT Partition with MiniTool Partition Wizard to get operations to create an exFAT partition.
How to Make an Empty External Drive Compatible with Mac and PC
If there is no file saved on your external hard drive, how to make external hard drive compatible with Mac and PC?
It's very easy to share it between Mac and PC and you also need a Windows computer, a Mac machine, and the free partition manager MiniTool Partition Wizard Free Edition.
There are 3 solutions for this case, so please choose the one you like most to format external hard drive Windows 10/8/7.
Solution 1: Format External Hard Drive Windows 10/8/7 to FAT32
Since users are unable to create a FAT32 partition larger than 32GB in Windows Disk Management, they need to use MiniTool Partition Wizard Free.
Please download and install this program on your Windows computer to format an external hard drive for Mac and PC.
Firstly, open the software to enter its main interface as follows. Here, please select the NTFS partition or HFS+ partition of external hard drive, and click 'Delete Partition' feature from the left action pane. If there are multiple partitions on the external disk, please select the disk and click 'Delete All Partitions' feature instead. After that, an unallocated space will be released.
Secondly, you can create one or more FAT32 partitions in unallocated space. Select the unallocated space and choose 'Create Partition' feature from the left side.
Then, you should choose 'FAT32' from the 'File System' option in the pop-out window. Meanwhile, you can set properties for this new partition and click 'OK' to go back to the main window of Partition Wizard.
At last, click 'Apply' button to make all changes performed.
Solution 2: Format External Hard Drive Windows 7/8/10 to exFAT
Firstly, please delete the NTFS or HFS+ partition in either MiniTool Partition Wizard or Windows Disk Management to release unallocated space. Then, you can create an exFAT partition with MiniTool Partition Wizard Free Edition by following steps introduced in the section Step 2: Create exFAT Partition with MiniTool Partition Wizard.
Once a FAT32 or exFAT partition is created on your external hard drive, you can share it on both Mac and Windows PC.
Solution 3: Create One HFS+ Partition for Mac and One NTFS Partition for Windows
Alternatively, you can create 2 partitions on the external hard drive: one is for Mac, and the other is for Windows. As to size for each partition, it depends on your own demands. By this way, you can easily format an external hard drive for Mac and Windows.
Step 1: Create a NTFS Partition and a FAT32 Partition
Please run MiniTool Partition Wizard Free Edition, then delete all the original NTFS or HFS+ partition(s), and create a new NTFS partition as well as a FAT32 partition, and the latter will be formatted to HFS+ in Mac machine.
Then, select the external hard drive and choose 'Delete All Partitions' to create an unallocated space.
Here, select the unallocated space and choose 'Create Partition' feature from the left action pane.
Now, please specify partition label (Windows is recommended), partition type (primary or logical), drive letter, file system (NTFS), cluster size, and partition size (you can change the length of the handle to adjust partition size). Then, click 'OK' to continue.
Now, you can see a NTFS partition is created. Please use the same way to create a FAT32 partition labeled with Mac. At last, click 'Apply' button to make all changes performed.
Step 2: Format the FAT32 Partition to HFS+ Partition on Mac
Please go to Utilities → Disk Utility to get the window below:
Then, select the external hard drive and click 'Partition' tab on the top.
Now, find the FAT32 partition and format it to OS X Extended (Journaled), which is the desired HFS+. Finally, click 'Apply' button to make all changes performed.
After NTFS partition and HFS+ partition are created on your external hard drive, it can be shared between Mac and Windows PC.
Bottom Line
Are you planning to format an external hard drive for Mac and PC? If yes, now try one of our methods to make external hard drive compatible with Mac and PC.
Should you have any problem, just feel free to leave us a message in comment part below or send an email to [email protected].