By Cherry / Last Updated April 27, 2023

Windows cannot format 8GB USB drive partition

“I have a Kingston 8GB USB drive, and I want to format it because it only used 963MB and when I want to extend the partition with the rest part, I found the Extend Volume grayed out. Thus, I searched this and I was told that I need format the USB drive partition so that I can full use of it. However, when I plug it in my Windows 10, I found that the Windows cannot partition this removable drive, and i can only format the 963MB partition.

Actually, besides this situation, there are many factors that will lead the Windows cannot format 8 GB USB drive partition.

● The shaking or striking leads the data broken;

● The virus attack destroyed the USB drive file system;

● The operating system doesn’t support this device;

● The USB drive has already locked so that you can read only and cannot format it;

● The improper using or destroying;

● The read-protection.

If you met the situation like we mentioned above, will lead 8GB USB drive partition format failed. If the USB has broken, you need repair the device or change a new one; if the USB drive has been locked, you can use the Windows Disk Management to unlock it; if the USB has read protection, release it first. but what if the Windows still remind you that the USB drive partition cannot be formatted when you want to format a brand new USB drive ?

How to format the 8GB USB drive partition?

Users know that the new USB drive need be formatted so that it can be used. If the Windows reminds you that Windows cannot format 8 GB USB drive partition, you need try another software. Here we recommend you AOMEI Partition Assistant, a freeware that you can manage all the drives on your Windows computer including the USB drive. AOMEI Partition Assistant supports many file systems including exFAT, FAT16, FAT32, NTFS, EX2,EX3,etc. So you do not need worry about its compatible with file system. To format your 8GB USB drive partition, you can follow the steps below:

Step 1. Connect your 8GB USB drive partition. Download AOMEI Partition Assistant free, install and launch it. You will see the basic environment of your storage devices including the removable USB drive.

Main Interface

Step 2. To format the whole USB drive, you need to extend partition with the rest space, then, right click it and select Format Partition.

Format USB Drive

Step 3. It will pop out a window where you can set the formatting. You can format your 8GB USB drive partition into NTFS or FAT32 according to your requirements. After all the settings, clickOK to back to the main interface and you will see the USB drive has already been formatted.


Step 4. Do not forget to click Apply at the toolbar to submit the operation.


Using AOMEI Partition Assistant to format hard drive including USB drive is very simple and easy. Besides, you canpartition USB drive on Windows 10/8/7 according to your requirements. AOMEI also supports all the Windows operating system including Windows 10/8/7.