<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><div>This was for drive re-use, not security, so I needed a tool with some finesse.</div><div><br></div><div><span name="x"></span>--<br>David L. Willson<br>Teacher, Engineer, Evangelist<br>COA LFCS CCAH RHCE CLP<br>Mobile 720-333-LANS(5267)<br>http://sofree.us<br><div><br></div>This is a good time for a r3VOLution.<span name="x"></span><br></div><div><br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-mce-style="color: #000; font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"Chris Fedde" <chris@fedde.us><br><b>To: </b>"David L. Willson" <DLWillson@thegeek.nu><br><b>Cc: </b>sfs@lists.sofree.us<br><b>Sent: </b>Monday, March 12, 2018 10:57:08 AM<br><b>Subject: </b>Re: [SFS] how to erase the crap out of (off from?) an old RAID/LVM/whatever disk<br><div><br></div><div dir="ltr">I use a sledge hammer.</div><div class="gmail_extra"><br><div class="gmail_quote">On Sat, Mar 10, 2018 at 3:59 AM, David L. Willson <span dir="ltr"><<a href="mailto:DLWillson@thegeek.nu" target="_blank" data-mce-href="mailto:DLWillson@thegeek.nu">DLWillson@thegeek.nu</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex" data-mce-style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;"><div><div>I knew there was a tool for the job, but I couldn't remember the name. Thanks for the reminder, Zack!</div><div><br></div><div><br></div><div><br></div><div id="m_-51521731292633201composer_signature"><div style="font-size:88%;color:#364f67" dir="auto" data-mce-style="font-size: 88%; color: #364f67;">Sent from my Verizon, Samsung Galaxy smartphone</div></div><div><div class="h5"><br><div><br></div>-------- Original message --------<br>From: Zack Coffey <<a href="mailto:clickwir@gmail.com" target="_blank" data-mce-href="mailto:clickwir@gmail.com">clickwir@gmail.com</a>> <br>Date: 3/9/18 21:38 (GMT-07:00) <br>To: "David L. Willson" <<a href="mailto:DLWillson@thegeek.nu" target="_blank" data-mce-href="mailto:DLWillson@thegeek.nu">DLWillson@thegeek.nu</a>> <br>Cc: <a href="mailto:sfs@lists.sofree.us" target="_blank" data-mce-href="mailto:sfs@lists.sofree.us">sfs@lists.sofree.us</a> <br>Subject: Re: [SFS] how to erase the crap out of (off from?) an old RAID/LVM/whatever disk <br><div><br></div><div>I've used wipefs before. <div dir="auto"><br></div><div dir="auto"><a href="http://manpages.courier-mta.org/htmlman8/wipefs.8.html" target="_blank" data-mce-href="http://manpages.courier-mta.org/htmlman8/wipefs.8.html">http://manpages.courier-mta.org/htmlman8/wipefs.8.html</a><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mar 9, 2018 6:01 PM, "David L. Willson" <<a href="mailto:DLWillson@thegeek.nu" target="_blank" data-mce-href="mailto:DLWillson@thegeek.nu">DLWillson@thegeek.nu</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex" data-mce-style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;"><div><div style="font-family:times new roman,new york,times,serif;font-size:12pt;color:#000000" data-mce-style="font-family: times new roman,new york,times,serif; font-size: 12pt; color: #000000;">This was hard enough to find that I want to stick in my journal. Hello, journal.<br><div><br></div>```<br># wait for /dev/sdc to become available<br>while ! blockdev --getsz /dev/sdc; do sleep 5; done<br># erase the tail - gets the RAID config<br>dd bs=512 if=/dev/zero of=/dev/sdc count=2048 seek=$(( $( blockdev --getsz /dev/sdc ) - 2048))<br># erase the head - gets the partition table<br>dd bs=512 if=/dev/zero of=/dev/sdc count=1024<br># cleanly disconnects<br>eject /dev/sdc<br>```<br><div><br></div><div><span></span>--<br>David L. Willson<br>Teacher, Engineer, Evangelist<br>COA LFCS CCAH RHCE CLP<br>Mobile 720-333-LANS(5267)<br><a href="http://sofree.us" target="_blank" data-mce-href="http://sofree.us">http://sofree.us</a><br><div><br></div>This is a good time for a r3VOLution.<span></span><br></div><br></div></div><br>_______________________________________________<br> SFS mailing list<br> <a href="mailto:SFS@lists.sofree.us" target="_blank" data-mce-href="mailto:SFS@lists.sofree.us">SFS@lists.sofree.us</a><br> <a href="http://lists.sofree.us/cgi-bin/mailman/listinfo/sfs" rel="noreferrer" target="_blank" data-mce-href="http://lists.sofree.us/cgi-bin/mailman/listinfo/sfs">http://lists.sofree.us/cgi-bin/mailman/listinfo/sfs</a><br> <br></blockquote></div></div></div></div></div><br>_______________________________________________<br> SFS mailing list<br> <a href="mailto:SFS@lists.sofree.us" target="_blank" data-mce-href="mailto:SFS@lists.sofree.us">SFS@lists.sofree.us</a><br> <a href="http://lists.sofree.us/cgi-bin/mailman/listinfo/sfs" rel="noreferrer" target="_blank" data-mce-href="http://lists.sofree.us/cgi-bin/mailman/listinfo/sfs">http://lists.sofree.us/cgi-bin/mailman/listinfo/sfs</a><br> <br></blockquote></div><br></div><br>_______________________________________________<br>SFS mailing list<br>SFS@lists.sofree.us<br>http://lists.sofree.us/cgi-bin/mailman/listinfo/sfs<br></div><div><br></div></div></body></html>