Comments on: 7 Steps To An Encrypted Partition (local or removable disk) http://ubuntu-tutorials.com/2007/08/17/7-steps-to-an-encrypted-partition-local-or-removable-disk/ Enhancing your Ubuntu experience! Thu, 02 Feb 2012 10:29:43 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: liju http://ubuntu-tutorials.com/2007/08/17/7-steps-to-an-encrypted-partition-local-or-removable-disk/#comment-14929 liju Thu, 15 Sep 2011 14:55:50 +0000 http://ubuntu-tutorials.com/?p=418#comment-14929 Thanks to Christer help I have working solution. So if anyone wants to check dd status also for not mounted partitions, here is recipie: 1) find the process ID of the dd command using something like: ps -ef | grep dd (I have used top instead) 2) run kill -USR1 $pid (found above) 3) if you want a constant status update on an interval run: watch -n 10 'kill -USR1 $pid' . This'll show you status every 10 seconds. Thanks to Christer help I have working solution. So if anyone wants to check dd status also for not mounted partitions, here is recipie:

1) find the process ID of the dd command using something like: ps -ef | grep dd
(I have used top instead)
2) run kill -USR1 $pid (found above)
3) if you want a constant status update on an interval run: watch -n
10 ‘kill -USR1 $pid’ . This’ll show you status every 10 seconds.

]]> By: liju http://ubuntu-tutorials.com/2007/08/17/7-steps-to-an-encrypted-partition-local-or-removable-disk/#comment-14925 liju Tue, 13 Sep 2011 07:27:02 +0000 http://ubuntu-tutorials.com/?p=418#comment-14925 <a href="#comment-14576" rel="nofollow">@David Harmon </a> Can You kindly advice how to check the progress of dd? I am doing this for two days already with /dev/random on 2 TB partition. Is there anyway to check how much is already done if partition is not mounted? Thanks! @David Harmon
Can You kindly advice how to check the progress of dd? I am doing this for two days already with /dev/random on 2 TB partition.
Is there anyway to check how much is already done if partition is not mounted?
Thanks!

]]> By: openwiki http://ubuntu-tutorials.com/2007/08/17/7-steps-to-an-encrypted-partition-local-or-removable-disk/#comment-14846 openwiki Tue, 12 Jul 2011 16:17:15 +0000 http://ubuntu-tutorials.com/?p=418#comment-14846 I use ext4. sudo mke2fs -t ext4 /dev/mapper/name -L label /dev/mapper/name /data ext4 defaults 0 0 Good tutorial. I use ext4.

sudo mke2fs -t ext4 /dev/mapper/name -L label
/dev/mapper/name /data ext4 defaults 0 0

Good tutorial.

]]> By: David Harmon http://ubuntu-tutorials.com/2007/08/17/7-steps-to-an-encrypted-partition-local-or-removable-disk/#comment-14576 David Harmon Mon, 07 Feb 2011 16:58:11 +0000 http://ubuntu-tutorials.com/?p=418#comment-14576 <a href="#comment-5085" rel="nofollow">@ Crosshair </a> You don't need to. "dd" will automatically exit when it runs out of partition (or disk). By the way, you can in fact random-wipe a whole disk (like /dev/sdc), but you're much better off doing it by partitions (/dev/sdc1). This is especially so when you're trying to wipe a terabyte or larger drive -- split it up into partitions that you can wipe in a mere day or two! I was getting a fairly steady 4MB/s, but I don't know whether that was pinned by my drive or the USB spec. Oh yeah -- after a reboot, make sure the drive you're working on is still the *same* device! @ Crosshair
You don’t need to. “dd” will automatically exit when it runs out of partition (or disk). By the way, you can in fact random-wipe a whole disk (like /dev/sdc), but you’re much better off doing it by partitions (/dev/sdc1). This is especially so when you’re trying to wipe a terabyte or larger drive — split it up into partitions that you can wipe in a mere day or two! I was getting a fairly steady 4MB/s, but I don’t know whether that was pinned by my drive or the USB spec.

Oh yeah — after a reboot, make sure the drive you’re working on is still the *same* device!

]]> By: David Harmon http://ubuntu-tutorials.com/2007/08/17/7-steps-to-an-encrypted-partition-local-or-removable-disk/#comment-14571 David Harmon Fri, 04 Feb 2011 13:20:05 +0000 http://ubuntu-tutorials.com/?p=418#comment-14571 Hmm. Under 10.04, after adding the fstab line, I got a filesystem which root can mount or unmount (without password!), but the user owning the mount point can't. Adding the "user" option to fstab allowed me (and presumably anyone) to mount it, but still didn't ask for a password. Is this because I haven't rebooted yet? (It's worrisome....) I haven't tried Darren's entry for /etc/crypttab yet -- eventually I'll want a boot-mounted partition, but I'd like to deal with this issue first. Might it be better to change the ownership of the mapper device and change fstab to use "owner" instead of "user"? Hmm. Under 10.04, after adding the fstab line, I got a filesystem which root can mount or unmount (without password!), but the user owning the mount point can’t. Adding the “user” option to fstab allowed me (and presumably anyone) to mount it, but still didn’t ask for a password. Is this because I haven’t rebooted yet? (It’s worrisome….)

I haven’t tried Darren’s entry for /etc/crypttab yet — eventually I’ll want a boot-mounted partition, but I’d like to deal with this issue first.

Might it be better to change the ownership of the mapper device and change fstab to use “owner” instead of “user”?

]]> By: Liviu http://ubuntu-tutorials.com/2007/08/17/7-steps-to-an-encrypted-partition-local-or-removable-disk/#comment-11960 Liviu Mon, 23 Aug 2010 09:45:22 +0000 http://ubuntu-tutorials.com/?p=418#comment-11960 Very nice tutorial. Thank you Very nice tutorial. Thank you

]]> By: Cifrar una partición o disco duro externo en GNU/Linux « Conocimiento Abierto http://ubuntu-tutorials.com/2007/08/17/7-steps-to-an-encrypted-partition-local-or-removable-disk/#comment-10133 Cifrar una partición o disco duro externo en GNU/Linux « Conocimiento Abierto Sun, 10 Jan 2010 14:08:15 +0000 http://ubuntu-tutorials.com/?p=418#comment-10133 [...] 7 Steps To An Encrypted Partition (local or removable disk) [...] [...] 7 Steps To An Encrypted Partition (local or removable disk) [...]

]]> By: Mike http://ubuntu-tutorials.com/2007/08/17/7-steps-to-an-encrypted-partition-local-or-removable-disk/#comment-9222 Mike Fri, 10 Jul 2009 03:16:15 +0000 http://ubuntu-tutorials.com/?p=418#comment-9222 yeah, i'll second the change to sdc1 rather than sdc. I was having a heck of a time getting this to work until I figured that out. yeah, i'll second the change to sdc1 rather than sdc. I was having a heck of a time getting this to work until I figured that out.

]]> By: sfatio http://ubuntu-tutorials.com/2007/08/17/7-steps-to-an-encrypted-partition-local-or-removable-disk/#comment-7611 sfatio Wed, 31 Dec 2008 17:36:53 +0000 http://ubuntu-tutorials.com/?p=418#comment-7611 I followed this guide but i cannot automount with Gnome the disk. Permissions are ok and via console i can mount that, but as I fill in my passphrase in gnome it gives this error: it's not possible to mount encrypted data: DBus error org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. any help would be greatly appreciated tnx! bye! I followed this guide but i cannot automount with Gnome the disk. Permissions are ok and via console i can mount that, but as I fill in my passphrase in gnome it gives this error:

it’s not possible to mount encrypted data:
DBus error org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

any help would be greatly appreciated
tnx! bye!

]]> By: MValdez http://ubuntu-tutorials.com/2007/08/17/7-steps-to-an-encrypted-partition-local-or-removable-disk/#comment-5702 MValdez Sat, 23 Aug 2008 23:23:31 +0000 http://ubuntu-tutorials.com/?p=418#comment-5702 > the Gnome Desktop (someone verify in KDE?) > will recognize the encrypted setup and > prompt you for a key visually Of course KDE also do this. Jim and Rich: you can access your LUKS-encrypted disks from any computer with LUKS and dm-crypt. I have used all my encrypted removable devices in different computers with Ubuntu and OpenSuse (my work desktot, my laptop, my home desktops, friend's laptops, etc.) and they work without problems. mjukr: LUKS is so Linux-native it works flawlessly, TrueCrypt is a Windows-centric project which later became multiplatform, maybe that explain why is not so easy to use in Linux. MrMan: the command shred can only delete data on a filesystem, not directly on the raw device (which is safer). Using dd is therefore far superior to clean a partition before encryption. Regards, MV > the Gnome Desktop (someone verify in KDE?)
> will recognize the encrypted setup and
> prompt you for a key visually

Of course KDE also do this.

Jim and Rich: you can access your LUKS-encrypted disks from any computer with LUKS and dm-crypt. I have used all my encrypted removable devices in different computers with Ubuntu and OpenSuse (my work desktot, my laptop, my home desktops, friend’s laptops, etc.) and they work without problems.

mjukr: LUKS is so Linux-native it works flawlessly, TrueCrypt is a Windows-centric project which later became multiplatform, maybe that explain why is not so easy to use in Linux.

MrMan: the command shred can only delete data on a filesystem, not directly on the raw device (which is safer). Using dd is therefore far superior to clean a partition before encryption.

Regards,

MV

]]>