News, tips, advice, support for Windows, Office, PCs & more. Tech help. No bull. We're community supported by donations from our Plus Members, and proud of it
Home icon Home icon Home icon Email icon RSS icon
  • Format 3tb us disk

    Posted on WSbiddles Comment on the AskWoody Lounge

    Home Forums AskWoody support PC hardware Format 3tb us disk

    Viewing 6 reply threads
    • Author
      Posts
      • #2296798 Reply
        WSbiddles
        AskWoody Lounger

        I have a 3tb disk that was working great on a UNIX system. I have upgraded the disks and now have a spare disk which I thought Id use on my windows system. However it had 3 800gb sections so to make one continuous dis I deleted 2 expecting to see a continuous area to format but I can now only see 800 gb there does not appear to be any other sectors how can I get the space back to use the disk as a backup?

      • #2296814 Reply
        Alex5723
        AskWoody Plus

        What does Windows Disk management show ? The missing partitions may be RAW format.
        You can try and ‘rescue’ the partitions using the free MiniTool Partition Wizard.

      • #2296834 Reply
        bbearren
        AskWoody MVP

        If it’s worth your time and you would like to insure that all the sectors on the disk are good, I suggest using DISKPART since you’re re-purposing a disk from another system.

        First use the command “list disk” to identify your 3TB disk.  Then the command “select disk #” to select the number of your 3TB disk (“#” is the number assigned to the disk by DISKPART.  That will give your 3TB disk focus.

        Next use the “clean” command to remove all formatting from the disk.  After that, use “convert GPT” to make the 3TB disk a GPT disk.  Then use “format fs=ntfs”.  That will take a while to run, but every sector will be checked and any bad sectors will be marked as unusable and will never be written.  If you don’t want to wait that long, you can use “format fs=ntfs quick” for a quick format.

        In that same syntax you can also give the volume a label by adding “label=mylabel” and type in your preferred label instead of “mylabel”.  For a quick format then, “format fs=ntfs quick label=mylabel”.

        My preference is always full format, even on a new disk, but we all have our own reasons for doing the things that we do.

        Create a fresh drive image before making system changes/Windows updates, in case you need to start over!
        "When you're troubleshooting, start with the simple and proceed to the complex."—M.O. Johns
        "Experience is what you get when you're looking for something else."—Sir Thomas Robert Deware

        • #2296940 Reply
          Paul T
          AskWoody MVP

          That is definitely an “if you have loads of free time” option.

          Personally I prefer to reply on the quality and ECC of modern hard disks and use the time for more fun stuff.

          cheers, Paul

      • #2297401 Reply
        WSbiddles
        AskWoody Lounger

        Im happy to type in a command but None of the above answers solves the problem.

        diskpart is only seeing 800gb as before and it should be 3tb help please

        Disk management only shows 800gb

        • #2297408 Reply
          anonymous
          Guest

          If you still have access to the unix system, can you mount the errant disk there and ‘attack’ it with Gparted ?

        • #2297483 Reply
          bbearren
          AskWoody MVP

          diskpart is only seeing 800gb

          Did you follow through with the listed steps, or just back out when you only saw 800GB?

          Create a fresh drive image before making system changes/Windows updates, in case you need to start over!
          "When you're troubleshooting, start with the simple and proceed to the complex."—M.O. Johns
          "Experience is what you get when you're looking for something else."—Sir Thomas Robert Deware

      • #2297439 Reply
        Paul T
        AskWoody MVP

        MiniTool Partition Wizard, as suggested above, will do it.

        Alternatively, open Disk Management, delete all partitions, create a new partition of 3TB.

        cheers, Paul

      • #2297450 Reply
        anonymous
        Guest

        Thats where i started i deleted the partions in disk management and they just vanished so i got left witb just 800g  and not seeing anything else even mini disk partition displays only 800g so i asked here as im stumped

        Will look at unix but dont reLly know my way around as  i waant to used the disk on windows

        • #2297494 Reply
          mn–
          AskWoody Lounger

          Not “disk management”, the command line tool “DISKPART”.

          Might have to use “clean all” instead of just “clean” if the disk has a format Windows doesn’t recognize correctly, but even that isn’t completely certain…

          Will look at unix but dont reLly know my way around as i waant to used the disk on windows

          Well yeah, but Windows doesn’t really have a good equivalent to “dd if=/dev/zero of=/dev/${whatever}” … the DISKPART “clean all” is about the closest thing without third-party utilities.

          Using a Linux liveboot or some such to unscramble drive formatting for use with Windows is not uncommon. Seems that if Windows sees data that is just “too wrong”, it won’t allow any access to it… not even to fix it. So if there was a particularly unlucky error with the partition table…

          Linux and Unix will at least overwrite everything if told to, and all zeroes is something that Windows will agree to repartition and format.

      • #2297559 Reply
        Paul T
        AskWoody MVP

        If Windows is only seeing 800GB then you may have a problem with the disk.

        Install MiniTool PW and let us know what it sees.

        cheers, Paul

    Viewing 6 reply threads

    Please follow the -Lounge Rules- no personal attacks, no swearing, and politics/religion are relegated to the Rants forum.

    Reply To: Format 3tb us disk

    You can use BBCodes to format your content.
    Your account can't use Advanced BBCodes, they will be stripped before saving.