How to format a USB drive to FAT32 in Windows 11 and 10 (even over 32 GB)

Applies to: Windows 11 and Windows 10, USB flash drives, SD cards and external drives.

Before you start

• Back up the drive. Formatting removes all files on it.
• Check the drive letter in File Explorer (This PC). Choosing the wrong drive wipes the wrong data.
• Know why you need FAT32. It’s the most compatible format, needed by some car stereos, game consoles, cameras, older TVs, 3D printers and for UEFI boot drives. If your device also accepts exFAT, that’s usually a better choice because FAT32 can’t store files larger than 4 GB.

Method 1: File Explorer (drives up to 32 GB)

1. Plug in the USB drive and open File Explorer with Win + E.
2. Select This PC, right-click the USB drive and choose Format. In Windows 11 you may need Show more options first.
3. Set File system to FAT32. Leave Allocation unit size at Default allocation size.
4. Type a name in Volume label if you like, keep Quick Format ticked, and select Start, then OK.

If FAT32 isn’t in the list and only NTFS and exFAT appear, the drive is larger than 32 GB. Windows’ graphical tools, including Disk Management, only offer FAT32 up to that size. Use Method 2.

Method 2: The format command (drives over 32 GB)

1. Right-click Start and choose Terminal (Admin) or Command Prompt (Admin).
2. Run this, replacing E: with your USB drive’s letter:

format E: /FS:FAT32 /Q /V:USB

/FS:FAT32 sets the file system, /Q does a quick format and /V:USB names the drive. Windows asks you to press Enter to confirm; check the letter once more before you do.

Newer Windows 11 builds raised this command’s FAT32 limit from 32 GB to 2 TB. If your version still has the old limit, the command stops with The volume is too big for FAT32. In that case either use exFAT if your device supports it, or use a reputable third-party formatter that can create large FAT32 volumes (Rufus can, for example, when making boot drives).

Leave out /Q for a full format. It checks every sector and takes much longer, but it can show whether a cheap or old drive has bad areas.

Method 3: DiskPart (drive shows RAW or the wrong size)

If the drive shows as RAW, has several partitions, or shows much less space than it should (common after it was used as a Linux or boot drive), clean it and start fresh. This erases the whole disk.

diskpart
list disk
select disk 2
clean
create partition primary
format fs=fat32 quick label=USB
assign
exit

• In list disk, find your USB drive by its size. Replace 2 in select disk 2 with that number. Selecting the wrong disk and running clean wipes it.
• format fs=fat32 in DiskPart has the same size limit as the format command on your Windows version. If it refuses because the drive is too big, finish with format fs=exfat quick instead, or run exit and use Method 2.
• If DiskPart says the media is write protected, see the FAQ below.

Formatting an SD card works the same way; our guide to formatting an SD card covers card readers and camera-specific tips.

FAT32 limits and when to use exFAT instead

• 4 GB file limit: a single file can’t be 4 GB or larger. Copying a big video or ISO fails with “The file is too large for the destination file system”.
• Volume size: FAT32 itself supports large volumes, but Windows’ built-in tools historically only created them up to 32 GB.
• No permissions or journaling: fine for removable drives, but not for a drive Windows runs from.
• exFAT has no practical file size limit and works on modern Windows, macOS, Android and most recent TVs and consoles. NTFS is best for drives used only with Windows PCs.

If you need FAT32 for a Windows install USB and the install.wim file is over 4 GB, Microsoft’s Media Creation Tool avoids the problem by using a smaller, compressed install.esd image, so you don’t have to switch formats yourself.

Common FAT32 format errors

• “Windows was unable to complete the format”: close any program using the drive, try another USB port, then use DiskPart (Method 3).
• “The volume is too big for FAT32”: the drive is larger than your Windows version’s FAT32 limit; see Method 2.
• The format option is greyed out in Disk Management: the drive has no volume. Right-click the unallocated space and choose New Simple Volume, then pick FAT32 if the size allows.
• A System Volume Information folder appears after formatting: that’s normal; Windows creates it on most drives. See System Volume Information access denied for what it is.

Related guides

• How to format an SD card in Windows 11 and 10 (4 ways)
• System Volume Information access denied: what it means and what to do
• We couldn’t find any drives: fix it when installing Windows

Official sources: for more detail, see Microsoft’s own pages:

• Microsoft Learn: format command
• Microsoft Learn: File system functionality comparison

Frequently asked questions

Can I convert a USB drive to FAT32 without losing data?

Not with Windows’ own tools. Formatting always erases the drive, so copy your files somewhere else first and copy them back afterwards (keeping in mind the 4 GB file limit).

Why does Windows only offer exFAT and NTFS for my 64 GB drive?

File Explorer and Disk Management only offer FAT32 for volumes up to 32 GB. Use the format command in an administrator Command Prompt, which supports larger FAT32 volumes on newer Windows 11 builds.

The drive says it’s write protected. What now?

Check for a lock switch on the drive or SD card adapter. In DiskPart, after select disk, run attributes disk clear readonly. If the drive is still read-only, its controller may have locked it because the memory is failing, and it should be replaced.

Is FAT32 or exFAT better for a USB drive?

exFAT, unless the device you’re using it with only reads FAT32. FAT32’s 4 GB file limit is the main problem with large files such as videos and disk images.