Thanks for reply. Then how can I solved my drive problem? I never change my drive with license. Because of license I must run mt to my defective drive?You loose the license by format and your backup will be useless.
Use netinstall to install fresh copy of ros to the drive and do not format it.
I understand but mikrotik do not understand my problem. Mikrotik will be richer in the future and a customer like me will be uninhabited.This was the condition you had known before you bought the license.