summaryrefslogtreecommitdiffstats
path: root/wiki/src/doc/encryption_and_privacy/secure_deletion.mdwn
diff options
context:
space:
mode:
Diffstat (limited to 'wiki/src/doc/encryption_and_privacy/secure_deletion.mdwn')
-rw-r--r--wiki/src/doc/encryption_and_privacy/secure_deletion.mdwn77
1 files changed, 61 insertions, 16 deletions
diff --git a/wiki/src/doc/encryption_and_privacy/secure_deletion.mdwn b/wiki/src/doc/encryption_and_privacy/secure_deletion.mdwn
index a23c5fb..447b131 100644
--- a/wiki/src/doc/encryption_and_privacy/secure_deletion.mdwn
+++ b/wiki/src/doc/encryption_and_privacy/secure_deletion.mdwn
@@ -32,16 +32,16 @@ desc="Wikipedia: %s"]].</p>
<a id="usb_and_ssd"></a>
-Warning about USB sticks and solid-state drives
-===============================================
+Warning about USB sticks and solid-state disks
+==============================================
**The methods described below will not work as expected on USB sticks and
-solid-state drives.**
+solid-state disks.**
-- The existing hard drive-oriented techniques for secure deletion of
+- The existing hard disk-oriented techniques for secure deletion of
individual files are not effective.
-- Overwriting twice the entire drive is usually, but not always,
- sufficient to securely clean the drive.
+- Overwriting twice the entire disk is usually, but not always,
+ sufficient to securely clean the disk.
<div class="caution">
@@ -53,8 +53,7 @@ with graphical tools.
</div>
For more details read, the corresponding section of the Wikipedia article on
-[[!wikipedia Secure_file_deletion#Data_on_solid-state_drives desc="Secure file
-deletion"]].
+[[!wikipedia Data_erasure#Limitations desc="Data erasure"]].
Securely delete files
=====================
@@ -80,6 +79,34 @@ Wipe](http://wipetools.tuxfamily.org/nautilus-wipe.html).
1. The deletion will start. It can last from a few seconds to several minutes,
according to the size of the files. Be patient…
+<a id="empty_trash"></a>
+
+Emptying the trash
+==================
+
+Before considering [[securely cleanly the available space on a
+disk|secure_deletion#index5h1]], make sure to empty the trash.
+
+ 1. Open *Nautilus*, either from the <span class="guimenu">Places</span> menu or
+ the <span class="guilabel">Computer</span> icon on the desktop.
+
+ 1. Click on the disk on which you want to empty the trash in the left
+ pane to navigate to the root of this disk.
+
+ 1. Choose <span class="menuchoice"><span
+ class="guimenu">View</span>&nbsp;▸ <span class="guimenuitem">Show hidden
+ files</span></span> to show hidden files.
+
+ 1. Delete the <span class="filename">.Trash-1000</span> folder or
+ similar.
+
+<div class="tip">
+
+<p>Apply this technique to the <span class="filename">Persistent</span>
+folder to empty the trash of the persistent volume.</p>
+
+</div>
+
<a id="clean_disk_space"></a>
Securely clean available disk space
@@ -91,7 +118,8 @@ the free space on the disk.
<div class="caution">
-This method does not work as expected on solid-state drives or USB sticks.
+<p>This method does not work as expected on solid-state disks or USB
+sticks.</p>
</div>
@@ -101,19 +129,36 @@ be deleted during the operation.
1. Open Nautilus, either from the <span class="guimenu">Places</span> menu or
the <span class="guilabel">Computer</span> icon on the desktop.
- 1. Navigate to a folder on the disk that you want to clean.
+ 1. Click on the disk that you want to clean in the left pane to
+ navigate to the root of this disk.
- 1. Right-click in the folder and choose <span class="guimenuitem">Wipe
- available diskspace</span>.
+ 1. Right-click in empty space in the right pane and choose <span
+ class="guimenuitem">Wipe available diskspace</span>.
[[!img wipe_available_diskspace.png link=no alt="Right-click&nbsp;▸ Wipe
available diskspace"]]
+ <div class="tip">
+ <p>On the previous screenshot, the trash in the <span
+ class="filename">.Trash-1000</span> folder is not deleted. See the
+ [[instructions above|secure_deletion#index4h1]].</p>
+ </div>
+
1. Confirm.
- 1. The cleaning will start. It can last from a few minutes to a few hours,
+ 1. The cleaning starts. It can last from a few minutes to a few hours,
according to the size of the available diskspace. Be patient…
- Note that a file called <span class="filename">oooooooo.ooo</span> is
- created in the folder. <span class="application">Nautilus Wipe</span> tries to make it as big as possible
- to use all the available diskspace and then securely deletes it.
+ Note that a file called <span
+ class="filename">oooooooo.ooo</span> is created in the
+ folder. <span class="application">Nautilus Wipe</span> tries to
+ make it as big as possible to use all the available diskspace and
+ then securely deletes it.
+
+<div class="caution">
+
+<p>This option does not delete hidden files.To show hidden files, choose
+<span class="menuchoice"><span class="guimenu">View</span>&nbsp;▸ <span
+class="guimenuitem">Show hidden files</span></span>.</p>
+
+</div>