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It might happen that the finder window will not show your drive once you have made the change mentioned above. Right-click the hard drive and choose Wipe Hard Drive. Or you can choose Wipe hard drive to completely delete the hard drive. There will be a Macintosh HD and the other will be your USB/External HDD. Right-click the hard drive you want to reformat and select Delete Partition. If your drive name contains spaces, use quotes around the name e.g. Note: Replace WESTERNDIGITAL with the name of your drive in all lines above with the drive name as showing up in finder window. LABEL=WESTERNDIGITAL none ntfs rw,auto,nobrowseĪnd then type :wq! to exit the vi editor window. In the vi editor, add the following line: Run the following steps on mac OS terminal (can be started by pressing Command + space and typing terminal) : Note: You need to have sudo rights (or be the administrator with root privilege) to perform the operation. I came across the following steps that allow you to enable Mac OSX 10 to access files on such external hard drive without formatting it or losing any data. However, FAT32 has a maximum 4GB file size limit whereas exFAT can work with files as large as 16EB. The other option is to re-format the drive on mac but that causes wiping out all data on the drive. Both FAT32 and exFAT can be used on Windows PC and Mac.
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I read online that there are some paid tools that allow you to access the files on such drives but I try not to pay for tools that I've never heard of. I was trying to access photos on my external hard disk that had been originally formatted using a Windows 7 OS (thus NTFS file system) and I could only read the files on my macbook but make no edits to them. It is such a pain to open any external hard drive or USB stick that has been written and formatted on a windows machine when trying to open it up on a macbook.
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