Unable to Determine File System Type How to Fix It

Summary

Unable to determine file system type by software such as Recuva or other programs or even the Windows computer? How to determine a file system type? This page tells what to do when hard drive, memory card, flash drive became inaccessible and how to recover data from an external hard drive or USB stick which is unable to determine file system type or becomes raw file system.

Unable to determine file system type recuvaRecuva unable to determine file system stype

How to Recover Data from Unrecognized File System Device

You need a data recovery program to recover your data from an unrecognized file system device, do choose a reliable one, because some may do harm to your data and computer, here I recommend iCare Data Recovery pro, which is an effective, 100% safe data recovery tool. Due to its read-only system setting, it won’t do harm to your computer or change the file type of your data.

Free Download

And you can follow the steps to recover the data from the device with unrecognized file system type.

Step1: Free download iCare Pro Free. Run the program.

Step2: Enter “Deep Scan Recovery” or “Raw Drive Recovery” mode. Select your device to scan.

Recover data from unrecognized file system device with iCare Data Recovery ProRecover data from unrecognized file system device with iCare Data Recovery Pro

Step3: Preview the found data, and select those needed to recover. Store them to another place.

Recover data from unrecognized file system device with iCare Data Recovery ProRecover data from unrecognized file system device with iCare Data Recovery Pro

Repair Unrecognized File System Device Using CMD/Format

Fix #1 - Format device by right click format, or disk management

  • Insert your media to Windows computer, and then open 'This PC'
  • Right click your storage media, -> Format
  • Confirm the formatting

Repair device with unrecognized file system by formattingRepair device with unrecognized file system by formatting it in Windows computer

#2 - Fix the undetermined file system using cmd

Attention: Do not put a wrong number on the command window when you run CMD command prompt, a mistake can make your system drive get effected.

This process will formatted all your data on the external hard drive, remember to recover you data first if you have need them.

Step 1: Open cmd in Run by typing 'cmd'

Repair device with unrecognized file system with CMDRepair device with unrecognized file system with CMD

Step2: Type“format I: /fs:ntfs”(I shall be replaced by your own raw drive device drive letter)

Repair device with unrecognized file system with CMDRepair device with unrecognized file system with CMD

After this process finished, the file system of the device will be converted into NTFS, you can also change the “ntfs” in the command line into “fat32”, then you can convert the file system into FAT32 file system.

How to Determine File System Type

“I inserted my external hard drive on the computer to transfer some data, but suddenly my computer shut down and reboot, then I try to open my external hard drive on the computer,but the computer ask me to format it, and says it is unable to determine the file system type. I need my data on the external hard drive. Is there any way to help me repair the external hard drive and get back my data?”

Usually the file system of a storage media comes with the following regulations.

  1. Hard drive, external hard drive, ssd usually comes with EXFAT, NTFS, FAT32 file system made by factory; and MAC disk is made with hfs+ file system on MAC
  2. Flash drive, memory card of different types usually was made of FAT, fat32, ntfs, exfat by manufatories.

The file system of the device will become raw file system or unknown file system type which can not be recognized by Windows by telling you the type of file system is RAW, or unable to determine file system type... So to repair the error device, you need to convert the file system into file system types supported by Windows: NTFS, FAT32, exFAT, for example.

Repair device with unrecognized file system by formattingRepair device with unrecognized file system by formatting

You can change the file system type with CMD command prompt. While this process will format the device, you need to recover data before that if you have needed data on it.

Last updated on Oct 20, 2021

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