Disk wiping: Difference between revisions

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* To wipe an HDD by writing zeros to it:
* To wipe an HDD by writing zeros to it:
:<code>#  ddrescue -f /dev/zero /dev/addX</code>
:<code>#  ddrescue -f /dev/zero /dev/adaX</code>
:The average speed is above 100 MB/s, so 1 TB takes about 2-3 hours.
:The average speed is above 100 MB/s, so 1 TB takes about 2-3 hours.
* To wipe an Intel/Solidigm Data Center SSD by the [https://www.solidigm.com/support-page/drivers-downloads/ka-00085.html Solidigm Storage Tool]:
* To wipe an Intel/Solidigm Data Center SSD by the [https://www.solidigm.com/support-page/drivers-downloads/ka-00085.html Solidigm Storage Tool] (on Linux):
#Delete all partitions
#Delete all partitions
#<code># sst delete --ssd <index></code>
#<code># sst delete --ssd <index></code>
Line 8: Line 8:
::<code># sst show --ssd</code>
::<code># sst show --ssd</code>
* To wipe a SSD by the ATA Security Erase command:
* To wipe a SSD by the ATA Security Erase command:
#Make sure the drive is not frozen and support "enhanced erase":
#Delete all partitions and destroy the partitioning scheme
#:<code># gpart destroy -F adaX</code>
#Make sure the drive is '''not frozen''' and support '''"enhanced erase"'''
#:<code># camcontrol security adaX</code>
#:<code># camcontrol security adaX</code>
<pre>
 
[...]
#Issue the ATA Secure Erase command
Security Option          Value
#:<code># camcontrol security adaX -U user -s Erase -h Erase</code>
supported                yes
[[Category: FreeBSD]]
enabled                  no
drive locked              no
security config frozen    no
count expired            no
security level            high
enhanced erase supported  yes
erase time                4 min
enhanced erase time      4 min
[...]
</pre>
#Set a user password (this password will be cleared on the next step, so the exact choice does not matter):
#:<code># hdparm --user-master u --security-set-pass foo /dev/sdX</code>
#Issue the ATA Secure Erase command:
#:<code># hdparm --user-master u --security-erase foo /dev/sdX</code>
#Check that security is disabled:
#:<code># hdparm -I /dev/sdX
#:[...]
#:Security:
#::        Master password revision code = 65534
#:::                supported
#::        <span style="background:#ffff00">not    enabled</span>
#::        not    locked
#::        not    frozen
#::        not    expired: security count
#:::                supported: enhanced erase
#::        3min for SECURITY ERASE UNIT. 3min for ENHANCED SECURITY ERASE UNIT.
#:[...]</code>
[[Category: Linux]]
[[Category: Linux]]
[[Category: Hardware]]
[[Category: Hardware]]

Latest revision as of 20:37, 15 May 2026

  • To wipe an HDD by writing zeros to it:
# ddrescue -f /dev/zero /dev/adaX
The average speed is above 100 MB/s, so 1 TB takes about 2-3 hours.
  1. Delete all partitions
  2. # sst delete --ssd <index>
The <index> can be found by using the command
# sst show --ssd
  • To wipe a SSD by the ATA Security Erase command:
  1. Delete all partitions and destroy the partitioning scheme
    # gpart destroy -F adaX
  2. Make sure the drive is not frozen and support "enhanced erase"
    # camcontrol security adaX
  1. Issue the ATA Secure Erase command
    # camcontrol security adaX -U user -s Erase -h Erase
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