1.    05 Mar 2017 #1
    Join Date : Jul 2015
    Posts : 139
    Windows 10

    Windows no longer recognises external disk as NTFS


    I've got an external hard disk which I was using to back up two computers. The last time I used it it was recognised properly as containing an NTFS volume by both computers (both running Windows 10). However this time it is no longer recognised properly by either of the two computers I have tried to connect it to (including one of the ones it worked with last time). Disk manager sees it as containing a "healthy" volume, but not an NTFS one. What could be causing this and what can I do about it? The most important thing for me is to know whether or not the drive can be relied upon for future backups.
      My ComputerSystem Spec
  2.    05 Mar 2017 #2
    Join Date : Jul 2015
    Posts : 9,342
    Windows 10 Pro

    I would see what this program says about it:
    Free Partition Recovery Tool | MiniTool Software Solution
      My ComputerSystem Spec
  3.    05 Mar 2017 #3
    Join Date : Jul 2015
    Posts : 139
    Windows 10
    Thread Starter

    I've been running that recovery utility for a little while and it has only found 105 files. It stopped finding new files after the first few seconds it was running. So I guess it's not looking good for recovering that partition, but that's not my main concern. What I really need to know is whether the disk hardware is in trouble, or whether I'm OK to keep using it once I've replaced the corrupt partition with a new one. I found a utility that should enable me to get at the S.M.A.R.T. data, but I get the message "SMART status not supported", so I'm really in the dark about the physical health of the disk.
      My ComputerSystem Spec
  4.    05 Mar 2017 #4
    Join Date : Jul 2015
    Posts : 139
    Windows 10
    Thread Starter

    I ran Seagate's Seatools and quickly found that the drive has indeed failed. So there's my answer!
      My ComputerSystem Spec
  5.    05 Mar 2017 #5
    Join Date : Aug 2016
    S/E England
    Posts : 4,484
    10 Home x64 (1709) (10 Pro on 2nd pc)

    Quote Originally Posted by ricecrispies View Post
    What I really need to know is whether the disk hardware is in trouble, or whether I'm OK to keep using it once I've replaced the corrupt partition with a new one. I found a utility that should enable me to get at the S.M.A.R.T. data, but I get the message "SMART status not supported", so I'm really in the dark about the physical health of the disk.
    See what CrystalDiskInfo can tell you. I prefer using the Portable App version....
    CrystalDiskInfo Portable | PortableApps.com - Portable software for USB, portable and cloud drives

    It could just be that the partition and the data it contains is intact, it's just the partition ID (that tells the system the format) that has been lost. You can set the ID to 0x07 (for NTFS) using Diskpart from an admin command prompt.

    Click image for larger version. 

Name:	Diskpart set NTFS.PNG 
Views:	23 
Size:	32.8 KB 
ID:	123879

    If instead the volume is listed as offline, you need to assign it a drive letter - either using Diskpart or Disk Management.

    Click image for larger version. 

Name:	Diskpart set volume letter.PNG 
Views:	23 
Size:	32.6 KB 
ID:	123880
      My ComputersSystem Spec
  6.    06 Mar 2017 #6
    Join Date : Jul 2015
    Posts : 139
    Windows 10
    Thread Starter

    Many thanks for the detailed answer. In this case, as I said in my earlier comment that I must have posted as you were writing, I discovered Seagate's Seatools and was able to determine quickly by using them that the drive is indeed physically broken.
      My ComputerSystem Spec

 


Similar Threads
Thread Forum
Win 10 pro no longer recognizes external backup HD
Win 10 no longer recognizes the external 2TB Fantom Drive for backup. 1. Uninstalled the drive using device manager. Cold booted. 2. Plugged in the HD (external power and 3.0 USB connection) 3. Does it's set up thing. Then there is a ! on the...
Drivers and Hardware
NTFS vs. ExFAT for external SSD
Hi, I have a new SSD Drive (128GB) and I was experiencing some poor performance. I read in another older thread about it and I want to post here my findings. Windows has a very good utility to check performance of Drives : Elevated Comand Prompt...
Performance & Maintenance
Solved windows 10 purposely corrupts ntfs partition on old disk, cannot mount
i am becoming quite pissed. a Western Digital hard drive i know is perfectly good, that was used as a windows 7 disk and had an automatic upgrade done on it but became problematic... I have had to grab a spare drive, install linux and boot on...
Drivers and Hardware
Windows 10 wont load up USB 3 External SSD memory storage disk drives
The issue happens on multiple platforms - PC and LapTops running Win10. Issues are with Samsung Portable SSD MU-PS250 (direct USB3 output) - I have tried several of these Drives and all wont work! and SanDisk Exterme Pro SATA in a 2.5" SATAIII ...
Drivers and Hardware
Converting RAW external HDD to NTFS?
My toshiba 1tb external hard drive currently says it is a raw file system and i cant seem to format it no matter what i do. I dont care for what is inside (only one word file) but i just want to be able to use it again. Is there anyway i can format...
Drivers and Hardware
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 22:25.
Find Us
Twitter Facebook Google+ Ten Forums iOS App Ten Forums Android App



Windows 10 Forums