How to Delete All Partitions on a Hard Drive to Clear Disk?

September 21, 2017

Clearing disk will delete all partitions on a hard drive, and you also wipe all data on the disk to ensure that the data cannot be recovered by any data recovery solution.

Why do you need to delete your partition?

In the following cases, you need to delete your partition:
You do not want the partition anymore.
You do not want all the data on the partition forever.
You want to merge the partition with another partition but they are not adjacent to each other.
You want some unallocated space to extend another partition.

Once, one of my neighbors asked me to help with his computer. I am always invited to solve PC problems by my neighbors and friends since I was engaged in this software company; and I am happy that I can help. I considered what the matter it is on seeing his worried face. However, after he told me his worries, I smiled and asked him to relax since it is a piece of cake if he makes use of our partition manager.

Actually, he wants to extend his c partition but he does not have an unallocated space on his computer. He does not want to merge any other partition to c except f, but partition f is not adjacent to c. Still, if he can merge f with c, he does not want the data on it any more. In such case, just as I told him, he should delete f partition first to get an unallocated space. Then, he can enlarge c partition with the unallocated space. Like this, he gets all he intended. It is easy and not difficult as what he expected.

If you have several partitions on a disk and you don’t need them anymore, however, you don’t want to delete those partitions one by one; in this case, "Delete All Partitions" will help you format hard drive and remove all partitions once and for all. This function applies in all Windows OSes (Operating System), all editions (both 32 and 64 bit), such as Windows 7/8/10, Windows Server systems (including Server 2012 R2 and 2008 R2) and Windows SBS (Small Business Server). After that, your disk will become blank and you can make full use of this disk by re-partition it. Then, how to delete partitions hard disk? Please look the below.

How You Delete Partitions on Hard Drive?

Before you do
If the disk from which you are going to delete all partitions contains some important data, please create a backup for those data and save the image file on another drive before you delete all partitions for the data will be formatted.
If there are other applications running on the partition which you are going to perform, AOMEI Partition Assistant will notice you to close those applications or to execute this operation under PreOS Mode. Therefore, in order to avoid the diploma, you can close these applications before deletion.
You will not be able to delete the Windows partition that you are currently logged in to. The only way would be to delete it at boot or during a Windows installation.
To delete all partitions
Step1.Select the disk that you want to clear in main window; right click it and select "Delete All Partitions" to invoke the related dialog.
Delete All Partitions
Step2.Select the delete method in the following dialog, there are two options:
Option One: Just delete all partitions on a hard disk. (The data which has been deleted is recoverable if you choose option one in this situation)
Option Two: Delete all partitions and wipe all data on the hard drive. If you choose this one, even data recovery software still can’t recovery the data on these partitions. Therefore, think twice before you decided to do this. Or, you can just make a backup of these data before deletion as mentioned above.
Deleting Methods

Step3. Click Apply to execute the operation if you are satisfied with the result viewed by the pending image listed on the main interface. Then, several minutes later, all the partitions on the disk will be deleted forever.
Please do not delete all partitions on a system disk, boot partition, or any partition that contains the virtual memory paging file, because Windows needs these information to start correctly. Doing that will make your computer unbootable the next time when you start it.

If you delete a primary partition, the empty space you get is called unallocated disk space. If you delete a logical partition within an extended drive the resulting empty space is called free space, then you will need to delete the free space again to have it as unallocated space. You can now use the empty space to create additional volumes.

If you are not tired with repeated operations and are willing to delete the partitions one by one, obviously you have another way to delete those partitions with AOMEI partition manager. Yes! Delete them one after another by repeatedly choose “Delete Partition”! There is also another method - merge these partitions and delete them all. You may not merge all the partitions into one, but it can still decrease the time you click “Delete Partition”. Any, whatever way you choose, you can get what you want. Still, “Delete All Partitions” is the easiest and fastest one.

How to Securely Clear Data on Solid State Drive in Windows 7?

Solid State Drives (SSDs) are now very popular nowadays and are widely applied to computers as the replacement for traditional hard drives. In case you need to clear SSD, you can try the newly developed feature, “Secure Erase SSD”, on AOMEI Partition Assistant. Now, I’ll show you the detailed steps of using this feature.

To Clear SSD Disk:

Step1. Connect the SSD will be deleted partition from to a Windows 7 based computer.

Step2. Launch AOMEI Partition Assistant. Right click the SSD and choose “SSD Secure Erase”. A notice will come out afterwards.

SSD Secure Erase

Step3. Choose the SSD. Here takes my Toshiba SSD for example. It is Disk 1 with 60GB storage.

Choose SSD

Step4. In general, SSD erasing will encounter a frozen state which is a protection for SSD. Do a Hot Swap* to release it.

Frozen State

Step5. Hot Swap makes disk erasing workable. Now, it’s the erasing process.

Performing Secure Erasing

*How to Perform a Hot Swap?

  1. Open computer case cover or back cover or hard shell on laptop.
  2. Find the selected SSD and unplug the power cable off SSD.
  3. Unplug SSD’s SATA cable.
  4. Reconnect the SATA cable to the SATA or IDE port.
  5. Reconnect the power cable to the power port.

When the erasing process completes, AOMEI Partition Assistant will prompt a window says it has erased the SSD successfully. Next, I would get unallocated space on that SSD. You see, there is more than one way to delete all partitions on a disk on the purpose of clearing it. AOMEI Partition Assistant has different strategies for different types of disk. So great, doesn’t it? Another feature of this program called “Wipe Hard Drive” is worth a shot.