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Date:      Wed, 12 Jan 2022 09:34:31 +0000 (UTC)
From:      Roderick <hruodr@gmail.com>
To:        FreeBSD Questions List <questions@freebsd.org>
Subject:   Re: dd and mbr
Message-ID:  <f0814445-d026-30-8956-84e36db9b7a6@gmail.com>
In-Reply-To: <20220112010402.GG61872@eureka.lemis.com>
References:  <4af920fc-eff1-a92e-d36e-1ba97079864c@gmail.com> <CAM8r67By518wp_1p9%2BJ5p7CE6Zj1M97Rm%2BaA-CSA-qtSVgyidw@mail.gmail.com> <20220112010402.GG61872@eureka.lemis.com>

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On Wed, 12 Jan 2022, Greg 'groggy' Lehey wrote:

First of all thank you very much for your detailed answer!

> Where did you get the dd approach?

It is what I expect from dd. I did such things with OpenBSD before.

> As others have said, at the very
> least you should have limited the length, otherwise you would
> overwrite the entire disk, one sector at a time.

That is what I wanted. I was deleting some old disks. I filled it
with zeroes and not random in order not to make the process
slower. Perhaps there is a faster tool than dd.

I know, the better way to delete is to destroy physically the disk,
at best to burn and melt it.

Rod.




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