How to Blank a Hard Drive Permanently?

How to Blank a Hard Drive Permanently?

Geeks - 

To permanently erase the data on a hard drive, you will need to use a data wiping program. This type of program overwrites the data on the hard drive with random data, making it impossible to recover the original information. To use a data wiping program, you will need to follow these steps:
Back up any important data on the hard drive that you want to keep.
Download and install a data wiping program on your computer. Some examples of data wiping programs include Darik's Boot and Nuke (DBAN), CCleaner, and Eraser.
Connect the hard drive you want to erase to your computer.
Open the data wiping program and select the hard drive you want to erase.
Choose the data wiping method you want to use. Some common options include a simple overwrite, a multi-pass overwrite, or a government-approved method.
Start the data wiping process and wait for it to complete. This can take several hours, depending on the size of the hard drive and the chosen data wiping method.
Once the data wiping process is complete, the hard drive will be permanently erased and all of the original data will be irretrievable.
Keep in mind that data wiping programs can be complex and require a certain level of technical expertise to use. If you are not comfortable using a data wiping program, it may be best to seek the help of a professional.