Symptoms
- 'File is too large for the destination file system' error
- Smaller files copy fine but large videos or ISOs fail
- Drive works fine on other computers, just with the same size limit
- Drive was formatted for use with older devices or game consoles
Likely causes
- CommonDrive formatted as FAT32, which has a hard 4GB per-file limitThis is a built-in limitation of the FAT32 file system, not a defect.
- PossibleDrive intentionally kept as FAT32 for compatibility with a TV, console, or car stereoSome devices only read FAT32 and won't work with other formats.
- PossibleTrying to copy a single file that's simply larger than the destination drive's remaining free spaceThis produces a different but similarly worded error and is worth ruling out separately.
What to do
- Confirm the file system by right-clicking the drive in File Explorer and checking Properties.
- If it says FAT32 and compatibility with older devices isn't needed, back up the drive's contents elsewhere first.
- Reformat the drive as exFAT, which removes the 4GB limit and still works across most modern devices.
- If the drive must stay FAT32 for a specific device (like a car stereo), split large files into smaller parts instead.
- Copy the backed-up files back onto the reformatted drive.
- Test that both large files and the target device (if compatibility mattered) work correctly afterward.
When to call a pro
If a specific device requires FAT32 and also needs large files, ask a specialist about that device's supported alternatives before reformatting.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.