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

[David L. Willson]

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. 

----- Original Message -----

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: 

<blockquote>

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 
http://lists.sofree.us/cgi-bin/mailman/listinfo/sfs 





_______________________________________________ 
SFS mailing list 
SFS at lists.sofree.us 
http://lists.sofree.us/cgi-bin/mailman/listinfo/sfs 


</blockquote>



_______________________________________________ 
SFS mailing list 
SFS at lists.sofree.us 
http://lists.sofree.us/cgi-bin/mailman/listinfo/sfs 

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sofree.us/pipermail/sfs/attachments/20180312/d5e23dce/attachment.html>