I want to use the drives anew.
I had run fdisk and deleted all the partitions on it and after rebooting it
still shows device-mapper info.
Will the below command clear all information on the drive if I run it after
deleting the current partitions? Or is there more configuration after it.
>>> To clear the device-mapper data from an *empty* partition overwrite the
> first 2-4MB with zeros:
> # dd if=/dev/zero of=/dev/sdb1 bs=1M count=2
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