How to format an encrypted partition of a flash drive?

Question

linux

Hello.
Please tell me, I have a flash drive on which part of the partition is encrypted using cryptsetup luks
. There is no password. How to format a partition and re-merge all partitions on a flash drive?
Through the terminal could not, acronis does not take. That's all my knowledge (s).

Answer 1

gparted?
or
dd if=/dev/zero of=/dev/sdX