[SFS] how to erase the crap out of (off from?) an old RAID/LVM/whatever disk

[Chris Fedde]

I use a sledge hammer.

On Sat, Mar 10, 2018 at 3:59 AM, David L. Willson <DLWillson at thegeek.nu>
wrote:

> I knew there was a tool for the job, but I couldn't remember the name.
> Thanks for the reminder, Zack!
>
>
>
> Sent from my Verizon, Samsung Galaxy smartphone
>
>
> -------- Original message --------
> From: Zack Coffey <clickwir at gmail.com>
> Date: 3/9/18 21:38 (GMT-07:00)
> To: "David L. Willson" <DLWillson at thegeek.nu>
> Cc: sfs at lists.sofree.us
> Subject: Re: [SFS] how to erase the crap out of (off from?) an old
> RAID/LVM/whatever disk
>
> I've used wipefs before.
>
> http://manpages.courier-mta.org/htmlman8/wipefs.8.html
>
> On Mar 9, 2018 6:01 PM, "David L. Willson" <DLWillson at thegeek.nu> wrote:
>
>> This was hard enough to find that I want to stick in my journal. Hello,
>> journal.
>>
>> ```
>> # wait for /dev/sdc to become available
>> while ! blockdev --getsz /dev/sdc; do sleep 5; done
>> # erase the tail - gets the RAID config
>> dd bs=512 if=/dev/zero of=/dev/sdc count=2048 seek=$(( $( blockdev
>> --getsz /dev/sdc ) - 2048))
>> # erase the head - gets the partition table
>> dd bs=512 if=/dev/zero of=/dev/sdc count=1024
>> # cleanly disconnects
>> eject /dev/sdc
>> ```
>>
>> --
>> David L. Willson
>> Teacher, Engineer, Evangelist
>> COA LFCS CCAH RHCE CLP
>> Mobile 720-333-LANS(5267)
>> http://sofree.us
>>
>> This is a good time for a r3VOLution.
>>
>>
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>>
>>
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