How do I return an external backup hdd to its original new state?

  1.    07 Mar 2018 #1

    How do I return an external backup hdd to its original new state?


    I have a backup hdd that is currently has 4 partitions as shown below
    What partition software can return it to a 1.8 TB to its original state as purchased
    showing no partitions but instead 1.8 of unallocated space?
    Attached Thumbnails Attached Thumbnails backup hdd.JPG  
      My ComputerSystem Spec

  2. Bree's Avatar
    Posts : 9,517
    10 Home x64 (1809) (10 Pro on 2nd pc)
       07 Mar 2018 #2

    As you have probably discovered, Disk Management won't let you delete that recovery partition.

    From a Command prompt (Admin) use DISKPART

    At the DISKPART> prompt, list the disks to identify the disk number to use, then...

    Code:
    DISKPART> LIST DISK
    
      Disk ###  Status         Size     Free     Dyn  Gpt
      --------  -------------  -------  -------  ---  ---
      Disk 0    Online          465 GB      0 B
      Disk 1    Online          931 GB      0 B
    
    DISKPART> SELECT DISK 1
    
    Disk 1 is now the selected disk.
    
    DISKPART>CLEAN
    The CLEAN command removes all partition info from the selected disk (obviously I didn't hit return when generating the above example using my own ext HDD :))

    Once cleaned, the disk will appear as 'unallocated'. You can use the Diskpart command CREATE PARTITON PRIMARY to create a partition using the whole available space, or use you usual tool of choice.

    It's not a forensic clean, so it won't securely erase the disk, just removes all partitions. If you need to do that, use CLEAN ALL but it will take quite some time to complete.

    Code:
    DISKPART> help clean
         Removes any and all partition or volume formatting from the disk with
         focus.
    Syntax:  CLEAN [ALL]
        ALL         Specifies that each and every byte\sector on the disk is set to
                    zero, which completely deletes all data contained on the disk.
        On master boot record (MBR) disks, only the MBR partitioning information
        and hidden sector information are overwritten. On GUID partition table
        (GPT) disks, the GPT partitioning information, including the Protective
        MBR, is overwritten. If the ALL parameter is not used, the first 1MB
        and the last 1MB of the disk are zeroed. This erases any disk formatting
        that had been previously applied to the disk. The disk's state after
        cleaning the disk is 'UNINITIALIZED'.
    Example:
        CLEAN
    DISKPART>
    Last edited by Bree; 07 Mar 2018 at 12:44.
      My ComputersSystem Spec

  3.    08 Mar 2018 #3

    Bree's solution is straightforward and effective.

    An additional option for future reference: Since you now have MiniTool Partition Wizard as evidenced in one of the many threads you have open around this (I assume related) issue, you can simply use it to remove partitions also.
      My ComputerSystem Spec

  4.    09 Mar 2018 #4

    Or since you are in the Disk Management, right click the G: drive and the Recovery partition and Delete them, until the whole drive is Unallocated Space.
      My ComputerSystem Spec

  5. Bree's Avatar
    Posts : 9,517
    10 Home x64 (1809) (10 Pro on 2nd pc)
       09 Mar 2018 #5

    spunk said: View Post
    Or since you are in the Disk Management, right click the G: drive and the Recovery partition and Delete them, until the whole drive is Unallocated Space.
    Recovery partitions are usually protected in Disk Management, the only option with a right-click is 'Help'.
      My ComputersSystem Spec


 

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