Erase usb drive mac terminal

Format USB Drive Mac using Terminal. We also have a Command Line Disk Utility interface in Mac. And we can use it to format the USB on.
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Insert the flash drive in a USB port and execute the following Terminal application command. You should also see the phrase external, physical. For example, my 16 GB flash drive produces the output shown below. Next, the command to reinitialize the flash drive is given below.

How to format a USB drive on a Mac

I solved it with the Windows management disk. I erased all partitions of the disk and then created a fat Initially no drive letter was assigned but then from My Computer, format the drive without problems.


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My SD card had this problem after using it for a raspberry pi. I was able to fix it by doing this:. After this I was able to use the disk to create a bootable USB.

How to Erase and Format a USB Drive on Mac OS X

Hopefully this will fix the issue for you as well. As soon as I used the official one it worked fine.

It can be missed easily. Listen now. Home Questions Tags Users Unanswered. Asked 1 year, 9 months ago. Active 20 days ago. Viewed 19k times. I've tried to reformat it using Disk Utility but I get the following message and my usb is unmounted: I've followed the solutions found from these two postings with no luck.

How to Format USB Drive in the Terminal | Unixmen

Have you tried formatting the disk through diskutil? See superuser.


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  5. I got a similar error just the other day, actually couldn't modify partition map. Did you partition it with a tool like GParted? That's what caused it for me. I don't know where the error comes from, but I think Disk Utility needs to have empty space around all your partitions, and GParted may not have put that in. David Anderson David Anderson Any suggestions? So thank you, guys. Will catch you in the next post. In this blog I write tutorials and articles related to coding, app development, iphone etc. Your email address will not be published.


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