You might have to remove an existing GPT partition table from a hard disk when you install another OS like Windows which can't cope with GPT or like in my case, when you want to add an HDD into a RAID were the other disks use the traditional MBR partition table.
How to Hide a Recovery Partition or a Drive in Windows 10
The hard disk partitioning and the number of drives in a computer system depend entirely upon the choice of the manufacturer. He can create, as many drive partitions as he wants at the time of assembling a computer system but sometimes, the user does not find these partitions useful. You can customize the number of ... Read more