External Hard Drive For Mac And Pc Without Formatting

Key considerations. For Mac users, buying an external HDD already formatted for your system makes getting started much easier. This is because when you initially connect an external HDD made for Mac (to a Mac computer), you won’t be required to format it before you begin transferring files. To recover external hard drive without formatting using Disk Drill, follow these steps: Download and install Disk Drill for Windows. Connect the external drive and launch the program. Choose the external drive from the disk list. Click the Search for lost data button to scan the drive. Preview the recoverable data and select the files you want.

• Formatting Seagate External Hard Drive For Mac And Pc
• Format External Hard Drive For Mac And Pc Without Losing Data
• Best Format For External Hard Drive
• External Hard Drive For Mac And Pc Without Formatting Drive

External hard drives are important storage media for both Mac and Windows users. Usually, you can read and write to files on an external hard drive on your Mac. But there are chances that this external hard drive shows read-only on Mac.

You may be wondering why you can't write to this external hard drive even though you are the owner of this disk, and more importantly, if you can fix this read-only problem without formatting or not?

There are mainly three causes for this issue:

• The read-only external hard drive is NTFS file system
• You only have read permission to this external hard drive
• You can't write to external hard drives on Mac due to disk corruption

For example, many people have reported that their WD My Passport external hard drives are read-only on Mac. When you check its disk information, you will find you can only read the external hard drive on Mac. Moreover, users who use USB flash drives and SD cards on Mac also encounter this read-only problem.

Thus, this post will analyze three external hard drive read-only cases so that you can find a relevant and feasible solution to your problem.

Case 1: The read-only external hard drive is NTFS file system

A file system controls how data is stored and retrieved on a disk. There are many different kinds of file systems, and each one has different structure and logic, properties of speed, flexibility, security, size, etc. By default, Windows uses Microsoft NTFS file system while Macs use HFS+ and APFS for OS volume. FAT32 and exFAT are usable for both Windows and Mac operating systems.

That's to say, you are unable to write to NTFS drives on macOS Big Sur, Catalina, Mojave, and any earlier Mac operating systems.

If you try to copy or drag files on an NTFS-formatted external hard drive on Mac, you'll be unable to but see the greyed-out no symbol as below. And when you open files on this external hard drive, you will find your documents being read-only. For an NTFS file system SD card on Mac, files like photos are locked as you can only read them.

Therefore, if you find your external hard drive read-only, for example, a Seagate external hard drive shows read-only on Mac, the first thing that comes to your mind should be to check if this drive is NTFS file system.

How to check if an external hard drive is NTFS file system on Mac?

Simply, you can check this by viewing its disk information either in Disk Utility or in the Finder, and here is how.

Method 1: Check if an external hard drive is NTFS file system in Disk Utility

• 1. Click on Launchpad at the dock of your Mac and choose Other in the menu.
• 2. Choose Disk Utility among these utilities and open it.
• 3. When it is launched, click on the external hard drive you have problem with in the left sidebar. You will see an obvious 'Windows NT File System' in the right column.

Method 2: Check if an external hard drive is NTFS file system in the Finder

You can also check this in the Finder with a few clicks.

• 1. Open the Finder and right-click on this external hard drive.
• 2. Choose Get info in the context menu.
• 3. You will see 'Windows NT File System (NTFS)s' after File system if the read-only drive is formatted with Microsoft NTFS file system.

Then, after making sure that it is the Windows NTFS file system that makes your external hard drive read-only on Mac, you can go head to fix this problem. Try to repair the read-only external hard drive with or without formatting.

Solution 1: Using NTFS for Mac tool

If you have several important files on this external hard drive, and you frequently swap your work between Windows and Mac computers, formatting this drive definitely is the last solution you would resort to. The reason is, as you may know, formatting a hard disk will wipe your data out of this drive and cause data loss.

Then when external drive is NTFS-formatted, how can you fix the read-only drive without formatting?

An NTFS driver for Mac should be the most convenient tool for people who want to fix this issue without formatting, because you can work natively and seamlessly on NTFS file system external hard drives on your Mac in a few clicks. The NTFS for Mac software you can try is iBoysoft NTFS for Mac to make the NTFS drives writable on Mac.

About iBoysoft NTFS for Mac

iBoysoft NTFS for Mac can mount NTFS external hard drives in read-write mode on your Mac, granting people full access to read, write, edit, copy, and delete files on NTFS-formatted drives.

iBoysoft NTFS for Mac- Best NTFS Disk Management for Mac

• Grant full access to Windows NTFS file system on Mac
• Read, write, modify, transfer, and delete files on NTFS drives on Mac
• Erase disks to NTFS file system on Mac
• Unmount multiple drives with one click
• Support macOS 11 to macOS 10.13

iBoysoft NTFS for Mac is also a wonderful tool to manage NTFS external drives on Mac. It's a menu bar app, from which users can mount, repair, erase NTFS hard drives, external hard drives, SD cards, USB flash drives, etc. with a simple click.

Tutorial to write to NTFS-formatted external hard drive on Mac with iBoysoft NTFS for Mac

• 1. Free download and install iBoysoft NTFS for Mac on your computer, and then restart the Mac.
• 2. Connect NTFS external hard drive to Mac and launch iBoysoft NTFS for Mac.
• 3. Write to NTFS external hard drive after the external hard drive is mounted successfully.

Solution 2: Enable NTFS read-write with Terminal (not recommend)

You can also try the experimental method to enable NTFS read-write support with command prompt on your Mac. However, it is not recommended as it is not stable and could result in data loss if it goes wrong. So, use the command line with caution!

Warning: Do not use this method as a long-term solution to write to NTFS drives that contain important files. Meanwhile, do not use this method if you are not familiar with the command line, in case that you input a wrong command and cause unexpected damage to your Mac and drives.

Well, if you insist…here is how to do this:

• 1. Click Go at the upper right of your desktop and go to the Applications > Utilities > Terminal.
• 2. Input 'sudo nano /etc/fstab' to edit the fstab file (supply your password when prompted).
• 3. Type 'LABEL=NAME none ntfs rw,auto,nobrowse' in the editor window for the fstab file. (Be sure to change the word NAME to the name of your drive)
• 4. Press Control + O to save the file, followed byControl + X to exit.
• 5. Unmount your NTFS drive and attach it again.

Solution 3: Format this external hard drive to exFAT/FAT32

It is possible that you just recently bought a new hard drive and found it is formatted as NTFS. In this case, if you don't have anything important on this drive or you have a copy of a data backup, you can simply format this external hard drive without worrying about data loss. To formatting this read-only hard drive, you can just go to Disk Utility and Erase it.

There are several formats you can choose, and erasing this disk into which file system depends on how you intend to use the drive.

• APFS: If you plan to use the drive on macOS 11 Big Sur, 10.15 Catalina, macOS 10.14 Mojave, and macOS 10.13 High Sierra, you can format it into APFS for better experience.
• HFS+: It is also known as Mac OS Extended, whose later versions added journaling to prevent corruption of the file system structure. Therefore, you can choose HFS+ if you are going to use this external hard drive on macOS Sierra and earlier Mac operating systems.
• FAT32/exFAT: If your storage device is an SD card or USB flash drive, and you'd like to read-write this portable drive both on Mac and Windows OS, you'd better erase it with exFAT or FAT32.

Case 2: Disk permissions are changed as read-only

The Sharing and Permissions option is set up to determine who can delete or modify a file or program copied to the drive. Thus, if the permissions are changed by you or others, a message will pop up and inform you that the file is read-only or you don't have permission to save when you save changes to this disk.

In this case, if you right-click on the icon of your disk and choose 'Get info' to check the disk information, you will find you can only read this external hard drive or SD card even though it is not NTFS file system. That's to say, you can't write to this drive.

If this is the cause for your external hard drive being read-only, you can try the following solutions and fix this issue without formatting your drive.

Solution 1: Change the permission of this external hard drive

If your files on this external hard drive show as read-only or locked, or if you try to move some files to the Trash but get no response, you can try to change the permission of this disk.

• 1. Open the Finder and find your external hard drive in the left sidebar.
• 2. Right-click on this drive or volume and choose Get info, and then scroll down to Sharing & Permissions.
• 3. Extend this column by clicking on the triangle symbol, and then click on the Lock icon.
• 4. Input the password of your Mac, and click on Read only, then change your privilege as Read & Write in the right column.
• 5. Click the gear button (Action menu) at the bottom of the window, choose Apply to enclosed items, and then click OK to confirm the action.

Solution 2: Ignore Permissions on external hard drive in the Finder

To prevent such errors from happening, Mac operating system includes a setting to ignore Permissions on external drives, so all files on the drive should be fully accessible regardless of their Permissions settings. Here below are steps to ignore the permission on external hard drives:

Step 1: Select the external hard drive on your desktop or in the Finder sidebar, and then press Command + I to get information on the drive.

Step 2: Click on the arrow that is on the left side of the Sharing & Permissions tab near the bottom of the window.

Step 3: Check the box to Ignore ownership on this volume, or toggle it off and then on if it's already enabled. (Provide the password of your Mac if it is required.)

Case 3: Can't write to corrupted external hard drives on Mac

Some internal errors will cause a drive to be read-only as well. When this happens, your drive will be only mounted in read-only mode to prevent the data on it from corruption.

Solution: Repair read-only external hard drive with Disk Utility

Fortunately, you can take some actions to repair these minor disk errors with Disk Utility on your Mac. You can use the following guide to fix read-only external hard drive in Disk Utility without formatting.

• Step 1: Click Go at the upper right of your desktop and go to Utilities, and then open Disk Utility.
• Step 2: Select the read-only external hard drive on the left window.
• Step 3: Click First Aid in the and choose Run.

However, it is possible that an NTFS format is not the culprit of your disk being read-only. On the contrary, some other reasons make your disk not writable. For instance, if your disk becomes read-only after a macOS update, you may be facing one of the rare glitches of a macOS. Under this circumstance, if the solutions above are unable to fix this read-only external hard drive, you may need to format this drive, and then recover your important data from the formatted external hard drive instead.

Bonus part: Fix SD card read-only on Mac

Except for external hard drives, memory cards like micro SD cards and SDHC cards could be read-only on Mac as well. It could occur when your SD card is write protected, whether you access the SD card via a card slot or connect the camera to the Mac. If you have tried the solutions mentioned above and none of them work for you, here is a bonus tip.

Solution 1: For most cases, you need to make sure that you slide the write protection switch to the unlocked positition. It's possible that some USB SD card adapters don't honor that switch, but the card reader on Mac definitely does.

Solution 2: If the SD card is read-only on Mac still, you may want to slide the read-write lock to the middle neutral position and retry. Strange though, sliding the 'lock' switch on the card halfway does help mount SD cards in read-write mode.

Conclusion

Generally speaking, external hard drives being read-only on Mac appears when they are not formatted correctly and the solutions above should be helpful. Nevertheless, if you failed to repair this hard disk even with Disk Utility, it could be a failed external hard drive which needs to be replaced, or you can try your luck by sending it to a local disk repair service.

• How to format NTFS drives on Mac?

You can format the external hard drive or USB drive to make it compatible with both Mac and Windows machines. This thing is still unknown for many users but doesn’t worry it’s not complex.

If you are tech savvy and use Windows and Mac computers frequently, then you might need to transfer data between Mac and PC. Windows and macOS filesystems are different and you might need to format the drive every time to use on both platforms. You don’t need to format the hard drive every time you can choose a filesystem while formatting the drive so the hard drive or USB drive work on both Mac and PC

So to get rid of these situations we bring here a guide that will help you to format your drive which works on both platforms and you don’t need to format and backup data every time. After cross-compatible formatting, simply unplug the drive from one machine and then plug it into another. Sounds good to you right? So let’s started, how this works.

Understand file systems for Mac and Windows

There are three common file system types to format an external USB or hard drive, SSD drive, SD card and etc. FAT32, NTFS, and exFAT let’s have a look what’s the difference between these formats.

FAT 32 Format

Formatting Seagate External Hard Drive For Mac And Pc

This format is pretty old but supported and it’s not efficient as compared to NTFS. It doesn’t support big features but offers great compatibility which means it’s compatible with all versions of Windows. It can only support 4GB file size and up to 8TB hard drivers. It’s not capable to store files larger than 4GB.

NTFS Format

NTFS is a modern format system and Windows also uses this format for itself and for other non-removable drives by default. This format is also compatible with all versions of Windows but limited to none Windows OS as FAT32.

Format External Hard Drive For Mac And Pc Without Losing Data

exFAT Format

exFAT drives are faster at reading and writing as compared to FAT32. This format can store large files and it’s also lightweight. It’s compatible with all versions of Windows and the best thing it’s along with Windows it’s also compatible with macOS, Linux, and Android, etc.

Best Format For External Hard Drive

• If your drive is formatted as Windows default format NTFS then it’s only readable to macOS. You can’t do more than that or you have to install a separate app on Mac to read write the drive.
• Drive with macOS format HFS+ cant readable to Windows.
• FAT32 format works on both Windows and Mac but the problem is you can only work with files with a maximum size of 4GB.

Learn more: Copy data on NTFS drive in macOS

FAT32 is much better than NTFS and HFS+ becuase it works on both operating systems. You can also install drivers on each OS to make work your drive. So exFAT is much better than all of these formats and a simple option but this will not work on Leopard.

Format a USB Drive on Mac

Time needed: 5 minutes.

First, let’s see how to format an external hard drive or USB drive in macOS which works with both Mac and PC platforms, first plug-in your drive into a macOS machine.

1. Disk Utility

   Open Disk Utility on your macOS, press cmd + spacebar keys, and type Disk Utility in the spotlight search. Open Disk Utility from the search results.

2. Erase Drive

   On the Disk Utility interface, select an external drive click on the Erase button from the top of the window (make sure and backup your drive before erasing it).

3. Drive format

   Now enter the name for the external drive which will be used after formatting and also select the exFAT for Format option and click on the Erase. This will format the drive as exFAT format and your drive is now compatible with both platforms.

External Hard Drive For Mac And Pc Without Formatting Drive

Format USB Drive in Windows

The below steps for formatting external drive is for Windows 10 and also works the same with an old version of Windows. To format your external drive hard drive in Windows to use on Mac and PC platforms, first plug-in your drive with a Windows machine.

Open the Disk Management tool by right-clicking on the start menu icon and then select Disk Management. Now right click on the external drive and click on the format option (double-check the drive name and capacity to make sure you are going to format the right drive.)

Now enter the Volume label as you need and change the File system for exFat and click OK. Now you are done.

Share your experience, how do you use an external hard drive on both Mac and PC. Did you format the drive as exFAT ? or use any utility that helps the system to read another type of file system. Please leave a comment below.