When you buy a new USB flash drive or SD card, you usually don’t think about formatting. But formatting a flash drive is actually a wise and necessary process. To put it simply, formatting your USB flash drive or SD card has two benefits. First, it prepares your drive for proper use by your computer. Second, it creates a filing system that organizes your data while allowing you to store as many files as possible.
To format a USB drive and change its allocation unit size:
Connect the USB drive to your computer.

Connecting the USB drive to your computer involves physically connecting the USB drive to a USB port on your computer. The USB drive should have a USB connector on one end and a standard USB Type-A port on the other end. The USB drive can be connected to your computer’s USB port by inserting the USB connector into the USB port on the computer.
Once the USB drive is physically connected to your computer, your operating system should automatically detect the new device and install the necessary drivers to use the USB drive. You should then be able to access the USB drive as a new drive letter in your File Explorer or as a new mounted drive on your computer.
It is important to properly disconnect the USB drive from your computer when you are finished using it. If you simply pull out the USB drive without properly disconnecting it first, you may lose data or damage the file system on the USB drive. To properly disconnect the USB drive, you should either use the “Safely Remove Hardware” feature in Windows or the “Eject” feature in MacOS to ensure that the USB drive is safely disconnected from your computer before removing it.
Go to “File Explorer” and right-click the USB drive.

“Go to File Explorer and right-click the USB drive” refers to accessing the file management system on your computer and finding the USB drive that you have just connected. The “File Explorer” is the file management system on Windows computers and is where you can access, manage, and organize your files and folders.
Once you have opened File Explorer, you should see the USB drive listed as a new drive letter. To format the USB drive, you need to right-click on the USB drive and select “Format” from the context menu that appears. Right-clicking on the USB drive will bring up a menu with a list of options that you can perform on the drive, such as copying, pasting, or formatting the drive.
By selecting “Format,” you are telling the operating system that you want to erase all of the data on the USB drive and set up a new file system. This is a necessary step before using the USB drive, as it ensures that the drive is clean and ready to use.
It is important to note that formatting a USB drive will erase all of the data on the drive. Make sure that you have backed up any important data before formatting the drive, as it will not be recoverable after the format process is complete.
Select “Format.”

“Selecting ‘Format'” refers to the process of initializing a USB drive and setting up a new file system on it. This step is usually performed when you want to erase all of the data on the drive and start over with a clean slate.
When you select “Format” from the context menu in File Explorer, you will be taken to the Formatting Wizard, which will guide you through the process of formatting the USB drive. In the Formatting Wizard, you will have several options to choose from, including the file system to use (e.g. NTFS, FAT32, exFAT), the volume label (or name) of the drive, and the allocation unit size.
The file system you choose will determine the type of files and data that can be stored on the drive. NTFS is a newer file system that supports larger files and has better security features, but it may not be compatible with older devices. FAT32 is an older file system that is more compatible with older devices, but has size limitations for individual files. exFAT is a newer file system that is similar to FAT32, but without the size limitations.
Once you have made your selections in the Formatting Wizard, you can begin the formatting process by clicking the “Start” button. The process may take several minutes, depending on the size of the drive and the speed of your computer.
It is important to note that formatting a drive will erase all of the data on the drive. Make sure that you have backed up any important data before formatting the drive, as it will not be recoverable after the format process is complete.
Choose the file system (e.g. NTFS, FAT32, exFAT).

“Choosing the file system” refers to selecting the type of file system that will be used on the USB drive. The file system you choose will determine how the data on the drive is organized and stored, as well as what types of files can be stored on the drive. There are several different file systems to choose from, including NTFS, FAT32, and exFAT.
NTFS (New Technology File System) is a modern file system that is used by Windows operating systems. It supports larger file sizes and has better security features than older file systems, but it may not be compatible with older devices.
FAT32 (File Allocation Table 32) is an older file system that is widely compatible with different operating systems and devices. However, it has limitations on the size of individual files and is not as secure as more modern file systems like NTFS.
exFAT (Extended File Allocation Table) is a newer file system that is similar to FAT32 but without the size limitations. It is commonly used for flash drives and memory cards, and is supported by most modern operating systems, including Windows and MacOS.
When choosing a file system, it is important to consider what types of files you will be storing on the drive, as well as the compatibility of the drive with different devices. If you are using the drive primarily with Windows computers, NTFS may be the best choice. If you need to use the drive with older devices, FAT32 may be a better option. If you need the drive to be compatible with a wide range of devices and you have larger files to store, exFAT may be the best choice.
Click the “Advanced” option and select the desired allocation unit size.
“Clicking the ‘Advanced’ option and selecting the desired allocation unit size” refers to adjusting the size of the data blocks (or clusters) that are used to store data on the USB drive. The allocation unit size, also known as the cluster size, determines how efficiently the drive can store data, as well as the maximum size of a single file that can be stored on the drive.
When formatting a USB drive, you have the option to adjust the allocation unit size to optimize the drive for different types of files and data. In general, smaller allocation unit sizes are better for storing small files, while larger allocation unit sizes are better for storing larger files.
To access the ‘Advanced’ option in the Formatting Wizard, you need to click on the ‘Advanced’ button, which will bring up additional options for the format process. In the ‘Advanced’ options, you can select the desired allocation unit size from a list of available sizes.
It is important to choose the appropriate allocation unit size based on the types of files you will be storing on the drive. For example, if you will be using the drive to store a large number of small files, such as photos or music files, you may want to choose a smaller allocation unit size to optimize the drive for small files. On the other hand, if you will be using the drive to store large files, such as video files, you may want to choose a larger allocation unit size to optimize the drive for larger files.
It is also worth noting that once you have chosen an allocation unit size, it cannot be changed later without formatting the drive again. Therefore, it is important to choose the correct allocation unit size before beginning the format process.
Click “Start” to begin formatting the drive.

“Clicking ‘Start’ to begin formatting the drive” is the final step in the process of formatting a USB drive. By clicking the ‘Start’ button, you are initiating the process of erasing all data on the drive and preparing it for use with the chosen file system and allocation unit size.
When you click the ‘Start’ button, the formatting process will begin, and the drive will be wiped clean. Depending on the size of the drive and the speed of your computer, the format process may take several minutes to complete.
It is important to note that once you have clicked ‘Start’ to begin the format process, it cannot be undone. All data on the drive will be permanently erased, so it is important to make sure that you have backed up any important data before proceeding with the format process.
After the format process has completed, the USB drive will be ready for use. You can use the drive to store and transfer data, as well as install programs and applications. The drive will have the file system and allocation unit size that you selected during the format process, and you can use it just like any other drive on your computer.
In conclusion.
Clicking ‘Start’ to begin formatting the drive is the final step in preparing the drive for use, and it is a crucial step in making sure that the drive is optimized for your specific needs and ready for use.
Note:
The optimal allocation unit size depends on the intended usage of the drive and the size of the files being stored. A larger allocation unit size may improve performance for larger files, but decrease performance for smaller files.