Plug the drive into a USB socket (if you have a recent MacBook or MacBook Pro that only has USB-C connectors, you’ll need a USB-C to USB-A adaptor). How to format a USB drive on a Mac. It’s exactly the same procedure if you need to reformat a flash drive on a Mac.
![]() You will notice that your pen drive has two identifiers. Its size is the biggest giveaway.Now that you know the disc allocated to your USB key, you will need to take note of its identifier and location. Otherwise, look for the particularities of the pen drive you wish to use. If you see the words “internal,” “synthesized,” or “disk image,” it is not a pen drive.It will be easier if you have a single flash drive inserted when wanting to format a USB drive using your Mac. You can identify your pen drive by the following:When it says “(external, physical),” it means that it is an external drive such as a pen drive or external hard drive. Enter the following command:You will find a list of disks in the example above, you can see that my USB key is the external drive located on disk 2. For a complete description and compatibility list (as not all formats are compatible with all operating systems), see this article. There are many file types available when you format a USB drive on Mac, such as exFAT, FAT32, JHFS+, etc. As for the location, it is usually /dev/, or in this case /dev/disk2.To format your USB drive on Mac, enter the following command:Sudo diskutil eraseDisk is where you choose which format you want to use when erasing and formatting your pen drive. The one that we want to remember is the first identifier, in this case, “disk2” (and not “disk2s2”, which is a partition). Format Flash Usb For Retropie On Mac OS Extended JournaledA single-digit mistake (for instance by typing disk0 or disk1 instead of disk2) could result in erasing your internal drive or another drive which wasn’t meat to be formatted.In this example, the command looks like this:Sudo diskutil eraseDisk exFAT Untitled /dev/disk2*You might notice that you get no option to choose a partition table (GLOSSARY). Unlike with the Disk Utility tool, the Terminal will give you NO WARNING before formatting the disk (and thus erasing its content). For this example, it will be “Untitled.” is the name and location of your pen drive, which usually looks like “/dev/disk2” or “/dev/disk3”.As we use the “sudo” command, you will be asked to enter your login password the “sudo” command means that you are executing a command as an Admin.MAKE SURE THAT YOU ARE USING THE CORRECT DISK WHEN EXECUTING THIS COMMAND. Is the name you want to give to your pen drive. JHFS+ refers to the Mac OS Extended Journaled format, which is proprietary to Apple and can only be used on macOS. Safe browsing cleaner for macHowever, the use of this tool is outside the scope of this article. However, you will need to use a third-party software called gdisk ( click HERE for the SourceForge page) to use it in this procedure. GPT is more technologically modern than MBR. MBR refers to Master Boot Record, whereas GPT refers to GUID Partition Table. However, there exists more than one partition table, the most popular ones being MBR and GPT. After a short time (less than a minute), the process will be completed, and you will see a written recap of what just happened. The command line will give you a percentage timeline while formatting your drive. Otherwise, Windows will not recognize nor initiate the boot sequence.Now, wait. A note regarding USB drivesYou can use any old pen drive laying around to burn a disk image or stock data. To do so, unmount it using the command line by typing:*Alternatively, if you have more than one external drive connected you might have to indicate a different drive, such as /dev/disk3s2. You can now safely eject your pen drive. A SanDisk USB flash drive) will also have an impact. The brand you opt for (e.g., a free pen drive received as a promotional item from your dentist vs. USB 3.1) will have an impact on the data transfer speed. For instance, the type of USB you choose (USB 2.0 vs. These flash drives are for those that are looking for some serious performance from their electronics. However, I feel confident about their performance judging by the numerous, well-detailed reviews available for these particular models. You will notice that they all have a metal finish, which doesn’t clash as much with your computer as those bulky plastic pen drives.I have not personally tested these USB keys.
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