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#PARTITION MAC EXTERNAL HARD DRIVE FOR WINDOWS AND MAC PARTITION GRAYED OUT HOW TO#
#PARTITION MAC EXTERNAL HARD DRIVE FOR WINDOWS AND MAC PARTITION GRAYED OUT FREE#

#PARTITION MAC EXTERNAL HARD DRIVE FOR WINDOWS AND MAC PARTITION GRAYED OUT FREE#

If you require any help in the above steps, feel free to reach out to me via comments below or on Twitter. Type in diskutil in the Terminal and hit enter to see the complete list of supported commands. Similarly, these commands can also be used to create, mount, unmount, rename partitions and do much more on your Mac. You can also go to About This Mac > Storage or Disk Utility to double check. After it’s done, you can re-run the diskutil list command again to verify that the volumes have merged and you have regained your space.

Let this command work and do its thing.

Here, the command is to merge partitions, in the JHFS+ format, with a name (NewName as an example) and the volume identifiers, first and second volumes, respectively. The first volume, in this case likely to be the OS X installation volume, will remain safe.ĭiskutil mergePartitions JHFS+ NewName disk2s4 disk2s6 For this step, note that the first volume that you list in the command will gain the space from the second volume, effectively destroying any data in it.

Once the volume is erased, you now have to merge the partitions.

The volume being erased has to match the first volume’s file format else there would be unexpected data loss. JHFS+ is short for Journaled Heirarchical File System Extended, or in a nutshell, the file system used by OS X. Here, instead of disk0s4, use the correct volume identifier as per the table you saw when you entered the list command. Use the following command:ĭiskutil eraseVolume JHFS+ drive /dev/disk0s4 On an internal hard drive, the following situations may cause you can't change drive letter and paths Windows 10. Usually, this situation often appears on an external storage device.

From here, you would have to select the partition you want to recover and erase it. It’s known that the mac hard drive is formatted to an HFS+ file system that can’t be accessed on a Windows PC.

It should show you a list similar to the above screenshot.

Type in the below command and press enter.

In case you ever get stuck in a situation where you are unable to recover a partition on your Mac, follow the below steps:

#PARTITION MAC EXTERNAL HARD DRIVE FOR WINDOWS AND MAC PARTITION GRAYED OUT HOW TO#

How to delete a partition through macOS Terminal A little research through Apple’s support documentation for the right OS X Terminal commands led me to the below solution. From prior Windows experience, this reminded me to take the command line route, or Terminal, in case of Mac. So, here I was, left with half of my disk space on my MacBook Air (I have the 128GB variant).