Ok, thanks! Therefore:
sudo fdisk --list /dev/sdb
sudo umount /dev/sdb1
sudo dd if=/dev/zero of=/dev/sdb bs=8M count=1
sudo fdisk --list /dev/sdb (repeat it, in order to check if change already done!)
sudo apt install pv
sudo dd if=/dev/zero conv=noerror,notrunc,sync bs=4096 | pv >/dev/sdb
Etc. (time to create brand new gpt partition) as already by @Torrone and you @fralb5 recommended. Bonne soirée!
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