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

[Shawn Perry]

Depends on what you are reusing it for...

On Mar 12, 2018 3:15 PM, "David L. Willson" <dlwillson at sofree.us> wrote:

> This was for drive re-use, not security, so I needed a tool with some
> finesse.
>
> --
> 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.
>
> ------------------------------
> *From: *"Chris Fedde" <chris at fedde.us>
> *To: *"David L. Willson" <DLWillson at thegeek.nu>
> *Cc: *sfs at lists.sofree.us
> *Sent: *Monday, March 12, 2018 10:57:08 AM
> *Subject: *Re: [SFS] how to erase the crap out of (off from?) an old
> RAID/LVM/whatever disk
>
> 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.
>>>
>>>
>>> _______________________________________________
>>> SFS mailing list
>>> SFS at lists.sofree.us
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>>>
>>>
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>
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