I have a Lenovo Notebook B490 and I'm using defrag after a factory reset using OneKey Recovery. But I saw that my HD is partitioned in 3 Recovery Partition, all with 100% space free:
I want to know why it's needed 3 partition for the recovery system and, if it's not, which one can I format.

I want to know why it's needed 3 partition for the recovery system and, if it's not, which one can I format.