How to format a pen drive on Mac

When we make intense use of a PEN Drive or SSD hard drive, it is recommended to format it to delete files and prevent malware from affecting your Mac device. In this post, we analyze how to format a hard drive on Mac and adapt it according to your needs.

How to format a pen drive on Mac

First Steps to format the equipment

Once we have connected a Pen Drive or SSD hard drive to our Mac, we go to the launchpad, specifically, we go to the Disk Utility App. In Apple‘s native application you can easily see all the disks that we have connected internally and externally to your Mac. The internal disks will be those that are connected to your computer, for example, the Macintosh HD, and then we have the external ones. In this case, we have a LaCie disk where if we click on it we can find information about it.

Externos e internos

If you have a problem with your external drive, we can click on “First aid” where you can perhaps solve that first problem. However, in the Erase section it is the place where we are going to be able to format your unit. If we press three options appear: name your external drive, security options and format.

Primera ayuda

Regarding the security options, we can determine the degree of deletion that we want from the hard drive. From a quick erase that is a superficial eraser and with a file recovery program you can recover some information and an advanced erase that is a more secure and intense erasure that prevents us from recovering any information.

Formats available for Windows and Mac

Once we have selected the degree of intensity of cleaning the disk, click on the format section. In this we can see if the different options and what we will have to choose depending on the use we give to our unit, since macOS has different formatting systems depending on whether said unit is used between Mac computers or between Mac and Windows computers.

Format Categorization

First of all, we have MacOS Extended (Journaled) and macOS Extended (case./lowercase., Journaled): both are very similar options. Both are a macOS format and they are two formats that we use when we want to pass information between macOS. This is the system that Apple has to format the products and use them with each other.


The second option is MS-DOS (FAT), this is a more suitable format for Windows. You can use it on both Mac and Windows, but depending on the size of the file type, you will not be able to pass it in a single shipment. If it is for small documents, it can come in handy, but if they are large files, it can cause problems.

This type of format comes in handy if you are connecting the hard drive to put it on TV, portable DVD or any music player in the car. It is a fairly universal system and since the type of files we use is not usually very large, it works really well for its intended use.

Within the options for Windows, ExFat stands out. This is the most recommended if you are not going to work in the Apple world in its entirety. ExFat is a dual system, so you will be able to connect the PEN on both Mac and Windows. So why don’t we use this option for everything? Because depending on the use that the PEN is going to have, it may be better to use the version mentioned in the previous paragraph to connect it to cars and televisions.

Once we have chosen the format, we press delete and it automatically begins to delete the SSD or PEN Drive hard drive.