Convert FAT32 to NTFS File System in Windows

Table of Contents

Background and causes
Use Windows built-in tools
Use Qiling tools for guided steps
Check the result

FAT32 is compatible with many devices but cannot store files larger than 4GB. NTFS is better for Windows disks that need large files and permissions.

Background and causes

Windows convert.exe can convert FAT32 to NTFS without formatting in many cases, but backup is still needed because file system changes carry risk.

Confirm the exact disk, partition, drive letter, file system, and capacity before changing anything.
Recover or back up important files before formatting, deleting, converting, or recreating partitions.
For boot-related changes, check BIOS/UEFI mode and boot order before editing disk layout.

Use Windows built-in tools

Run Command Prompt as administrator and use convert X: /fs:ntfs after replacing X with the correct drive letter. If Windows reports file system errors, insufficient space, or conversion failure, back up the drive first and then format it as NTFS.

Use Qiling tools for guided steps

Qiling Disk Master

Back up readable files or the whole FAT32 partition before formatting it to NTFS.

Free Download
Windows 11/10/8.1/8/7,100% Secure

Function 1. Choose the correct backup method

Use File backup if Windows can open the FAT32 drive and display files. Use Disk/Partition backup if Windows can detect the partition but cannot open the drive or list files. Store the backup on another disk or network location before formatting.

Situation 1. Windows can read files on the FAT32 drive

Step 1. Open Qiling Disk Master and go to Backup and Recovery. Click File backup.

Choose File backup before converting FAT32 to NTFS

Step 2. Select the folders and files on the FAT32 drive that you need to keep.

Select files from the FAT32 drive

Step 3. Choose a destination on another disk, external drive, NAS, or network location. Make sure it has enough free space.

Select another location for the file backup

Step 4. Review the source list and destination path, then click Proceed to start the file backup.

Complete the FAT32 file backup

Situation 2. Windows detects the partition but cannot read files

Step 1. Open Qiling Disk Master and go to Backup and Recovery. Click Disk/Partition backup.

Choose Disk Partition backup for unreadable FAT32 partition

Step 2. Select the FAT32 partition by disk number, drive size, and position. Do not select the backup destination disk by mistake.

Select the FAT32 partition for backup

Step 3. Choose a backup destination on another disk, NAS, or network folder.

Select a destination for partition backup

Step 4. Review the partition source and destination path, then click Proceed to start the partition backup.

Start backing up the FAT32 partition

Function 2. Format the partition as NTFS

If the built-in convert command does not work, format the target partition as NTFS after confirming that the backup is complete.

Step 1. Select the FAT32 partition and choose the format operation.

Choose the FAT32 partition to format as NTFS

Step 2. Set the file system to NTFS. Confirm the volume label, cluster size, and selected partition before continuing.

Set the file system to NTFS and proceed

Step 3. Review the pending operation and click Proceed to apply the NTFS format.

Function 3. Restore files and test NTFS

Copy the backed-up files back to the NTFS partition. Then copy a file larger than 4GB to confirm NTFS works, and open several restored files to verify that the backup is usable.

Check the result

Copy a file larger than 4GB to confirm NTFS works, and check that existing files open normally.

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