Langmeier Backup FAQ

FAT32 or NTFS? Which format is better for backups?

The FAT file system offers a significant advantage over NTFS in terms of compatibility, as it is supported by a wide range of operating systems. Additionally, many devices such as digital cameras and MP3 players rely on FAT32 for storage. In contrast, NTFS is primarily supported by Windows operating systems.

However, a major drawback of the FAT file system is its limited file size. The maximum file size for FAT32 is restricted to 4 GB. This limitation makes FAT32 impractical for tasks such as image backups, where files often exceed this size.

If you attempt to perform an image backup to an external hard drive and, after a few minutes, receive the error message “Disk full”—even though there is still sufficient space available—this is likely because the external drive is formatted with FAT32.

How to Change Your Backup Disk from FAT32 to NTFS

  1. Connect the external hard drive to your computer.
  2. Format the disk: Right-click on the icon for the external hard drive and select “Format…”.

    Format external hard drive
  3. In the format dialog, choose a file system. Select “NTFS” if it is not already selected by default. For faster formatting, it is recommended to check the “Quick Format” option, as a full format will take significantly longer.
  4. Start the formatting process: Click on “Start”. Windows will warn you that all data on the drive will be deleted. Confirm this by clicking OK.

After completing these steps, your external hard drive will be formatted with NTFS, and data backups will function correctly.

How to Convert FAT32 to NTFS Without Deleting Files

There is also a way to convert the file system without deleting your files, using the command line. Please proceed as follows:

  1. Go to Start > All Programs > Accessories, right-click on “Command Prompt”, and select “Run as administrator”.
  2. In the command prompt, enter the following command, replacing G: with the appropriate drive letter for your external hard drive:
    convert G: /fs:ntfs

    Convert FAT32 to NTFS via command line
  3. Confirm the command by pressing Enter.

This method converts the file system without deleting your data. However, while the risk of data loss is minimal, it is not entirely eliminated. Microsoft recommends backing up your data before proceeding:

“While the possibility of corruption or loss of data is minimal, it is still recommended that you back up the data on the disk you want to convert before converting.”

Therefore, we strongly advise you to create a backup of your data before converting or formatting your drive to ensure that no information is lost.

about the author Sebastian Müller
Partner support


Sebastian Müller is a partner and top customer advisor at Langmeier Software and therefore the best contact person for Langmeier backup solutions.

Phone: +41 44 861 15 70
Email: sebastian@langmeier-software.com
 

Look it up further: Langmeier Backup, Data backup, NTFS, FAT32

Related articles
Which type of backup is the best choice for my data?
This is how important data backup is in real life
The advantages and disadvantages of the different Windows file systems


Post a comment here...

This article covers the topics:
FAT32 or NTFS
NTFS Which format
for backup FAT32
Data backup NTFS FAT32