how to remove partitions from backup hdd

I want to clear the partitions from a 1 tb backup drive
I tried deleting the partitions by formatting them but it only removed the files in the partitions and the partitions are still there. see pic below
How can I remove the 4 partitions so I can use the hdd to clone a drive image on it

provlima said:

I want to clear the partitions from a 1 tb backup drive
I tried deleting the partitions by formatting them but it only removed the files in the partitions and the partitions are still there. see pic below
How can I remove the 4 partitions so I can use the hdd to clone a drive image on it

First, you better make darn sure the disk is no longer your boot priority disk!
Then, starting from right to left, delete the partitions, then, again from right to left, extend partitions.

You can delete them using Diskpart in an admin command window. However, I would use MiniTool Partition Wizard which is far easier to use.