All questions relating to LUKS (the disk-encryption specification) for Linux

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13 views

Enlarging luks partition

I'm getting new SSD disk soon and want to dd my old disk to new one. My disk is fully encrypted and using LVM. My new disk will be twice ad big as I have now. I was wondering how to use remaining ...
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20 views

Unable to mount encrypted drive at boot time

I am no longer able convince OS to ask me the password of encrypted drive at boot time. The drive in question is at /dev/sdb1 I had it working when I had 32 bit 14.04 installed. I did change the os ...
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1answer
59 views

Mount LUKS encrypted hard drive at boot (luks key stored in HOME folder which is encrypted by ecryptfs)

This question is regarding the one raised at: Mount LUKS encrypted hard drive at boot I have added my key to home folder and all works as a charm. Thanks guys! However I would like to better ...
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0answers
40 views

LVM & LUKS manual partitioned but issues with loader/init/grub

I've had some success with manually partitioning and installing LVM & LUKs. The partitions are created - home, root, swap and boot, the pv and vg's were all created and set up correctly. I ...
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121 views

Error booting into new kernel?

I cloned the Git tree of the mainline Linux Kernel and compiled it(version 4.5.0-rc1). After compiling with default configuration (make defconfig) I installed it. In the grub menu I can select this ...
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1answer
37 views

Cloning full-disc-encrypted system unencryptedly onto new disc

Essentially, I'm following this answer to clone the unencrypted content of a system with full-disc encryption to a new (smaller) SSD, from a live stick. I thought that would just consist of mapping ...
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31 views

Installing Ubuntu 14.04 along side Win 8 on an encrypted LVM partition without an alternate CD

I wanted to set up an encrypted Linux partition along side Win8 with separate root, home and swap. I read that to retain hibernate I needed to encrypt all three partitions with one pass-phrase and ...
3
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1answer
46 views

How do I render Ubuntu unusable by deleting the full disk encryption key?

I have an old computer that I'm ready to get rid of that has been encrypted using LUKS full disk encryption. Is it possible to delete the encryption key from the LUKS metadata so that nobody will ever ...
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68 views

Grub repair for encrypted disk

I previously had Kubutu (14.04 i think) installed with an cryptoLuks encrypted hard disk. I have been trying to install 15.04 on the same drive. The install went ok with no errors but I wasn't able to ...
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0answers
32 views

LUKS Partition labeled as “Unknown”

I wanted to downsize my LUKS partition for a Windows installation. I followed this tutorial, and after rebooting my Ubuntu installation, It just shows the Ubuntu 15.10 logo without prompting me to ...
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0answers
49 views

Issue dismounting LVM on LUKS system when initial live-USB isn't present

I am having a rather peculiar problem with the Ubuntu half of my system. The TL;DR is that I have Ubuntu 14.04 using an LVM on LUKS setup. /boot lives on an unencrypted partition (/sda3) while swap ...
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0answers
13 views

Server can't start after SWAP encryption

I'am using an encrypted/server with Dropbear SSH to enter my key. I would like to encrypt SWAP partition in that way : fdisk -l Device Boot Start End Sectors Size Id Type /dev/sda1 ...
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20 views

Wrong disk usage reporting in file manage on luks volume, correct on command line

When I mount a Luks encrypted volume (by selecting it in the file manager and providing a password), the disk usage reported in the file manager (when right clicking and opening the properties dialog) ...
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0answers
26 views

How to change “Device” identifier displayed in System Monitor?

System Monitor displays a list of mounted "Devices" under the "File System" tab. I would like to change the identifier that is associated with a "Device" listed in System Monitor. How can this be ...
0
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1answer
36 views

second hard drive, encrypted (LUKS, but mounts separately)

I have two storage devices in my machine. When I installed ubuntu, it offered to format the SSD and install to it, which was what I wanted. I didn't offer to do anything with the second. Fair ...
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0answers
41 views

What is wrong with LUKS and kernel 4.2.0-19-generic?

My HDD is encrypted using LUKS. It asks for password at boot time. I had to reboot after a crash and I believe I was using kernel 4.2.0-18 from 15.10. When rebooting it tried to boot on the latest ...
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0answers
26 views

Unable to decrypt two luks volumes post hardware change, simple mistake?

So here's the story I have an Acer R7 which I installed a 120gb evo 840 msata running Ubuntu 14.04 leaving the stock hard drive alone for the time being. In a bit of a rush for some storage space, ...
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1answer
183 views

cryptsetup: Cannot wipe header on device

I am trying to encrypt an external hard drive on Ubuntu 14.04 followig this guide. I started by formatting to ext4: $ sudo mkfs.ext4 /dev/sde1 mke2fs 1.42.9 (4-Feb-2014) Filesystem label= OS type: ...
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1answer
324 views

Resizing LUKS partition when not using LVM

I previously had two partitions on my hard disk, /dev/sdb1 and /dev/sdb2. sdb1 was unencrypted and sdb2 is encrypted with LUKS. I deleted sdb1 and would now like to resize sdb2 to take the space ...
0
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1answer
41 views

Let LVM+LUKS volume grow over new drive or RAID?

I would like to extend the storage capacity on my Ubuntu server by adding more drives. I'm currently using LVM+LUKS on my server so I'm having some difficulty understanding how I may add my new ...
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240 views

Can't enter password for luks disk encryption after nvidia drivers installed

I've just done a fresh install of 15.10. After installing the nvidia drivers for my quadro 600, I was able to improve the tty resolution by setting: GRUB_GFXMODE=1024x768 GRUB_GFXPAYLOAD_LINUX=keep ...
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1answer
38 views

Any chance of repairing a broken LUKS encrypted SD?

Is there any way of repairing a broken LUKS encrypted SD card? When I try to mount under Ubuntu Gnome 14.04 in Nautilus, it gives me this error message: Error mounting /dev/dm-1 at ...
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1answer
64 views

How to mount LUKS encrypted drive of old system with same VGname

I have two drives, an older and a newer one, both of which contain systems set up using Mint/Ubuntu with full disk encryption. I want to mount the older one on the newer one to copy some of my old ...
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135 views

Slower than advertised SSD performance

I've just assembled new machine: Asrock AM1H-ITX, AMD 5350 with AES-NI, 8GB RAM, Samsung 850 EVO 120GB SSD Elementary OS based on Ubuntu 14.04 Advertised read/write of the SSD is something around ...
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1answer
39 views

How to chain Ubuntu bootloader with openSUSE bootloader with LUKS?

I have an openSUSE Tumbleweed setup in LUKS with LVMs on /dev/sda2, and the bootloader is stored in /dev/sda1. I would like to install Kubuntu 14.04 to a separate hard-drive (in this case /dev/sdc). ...
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1answer
158 views

LUKS encrypted device gone missing

The 2TB disk that I use as an encrypted backup, is now reported by Ubuntu as being just free space. The encryption was setup as a LUKS encrypted device. The output of sudo fdisk -l reports: Disk ...
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28 views

crypt luks disc full, ubuntu account unusable

the last time I logged in to my ubuntu account, it did complain of limited free space available (~25MB), and I added/upgraded some package which must have pushed free space to 0. I powered off the ...
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42 views

Restart after install taking 'forever'

I just installed Ubuntu 14.04.03 from a custom cd with just a couple extra programs plus firewall configuration. Before I started the install, I installed the system76 driver and nvidia graphics card ...
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0answers
35 views

After upgrading of a kernel from the **3.19.0-15** to the **3.19.0-26** it shows me color lines on boot

CPU: Intel Core i7-4770. GPU: NVIDIA Corporation GK104 [GeForce GTX 760] (rev a1). Ubuntu 15.04 with LVM on LUKS: sda 8:0 0 111,8G 0 disk ├─sda1 8:1 ...
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132 views

Xubuntu 15.04 post install encryption

I have just installed Xubuntu 15.04 with /boot, /root, /home and swap all on different partitions, however the out of the box installer only gave me the option to encrypt /home. I want to encrypt ...
2
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1answer
182 views

Getting “Disk /dev/sdX doesn't contain a valid partition table” on LUKS external drive

Wanting to make sure I'm doing this right. I get the warning on both /dev/sdX and "/dev/mapper/luks-xxxx-xx. . ." when I run fdisk -l. This is what I did to encrypt it: cryptsetup -y -v luksFormat ...
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160 views

LUKS + LVM at Install Time

I am trying to use the Ubuntu 14.04.3 LTS installer to create a disk layout that logically looks like this during installation: /dev/sad | +-- /dev/sda1 (/boot) | +-- /dev/sda2 (LUKS) ...
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1answer
70 views

How to change file text content only with Shell Script commands?

In a file, there is: sd5_crypt UUID=1337 none luks,discard I'd like to change it to: sd5_crypt UUID=1337 /dev/disk/by-label/MON_LABEL_ICI:/keyfile luks,keyscript=/lib/cryptsetup/scripts/passdev ...
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1answer
109 views

Opening encrypted disk at boot using crypttab and decrypt_gnupg doesn't work

I have a Volume that is encrypted with a GnuPG pass phrase encrypted key. I can open it, using manual commands, like this: gpg -d key.gpg | cryptsetup luksOpen /dev/sdb2 cryptvolume This works ...
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2answers
686 views

What is the proper way to install Ubuntu 15.04 with LVM, LUKS, and manual partitioning?

I am trying to install Xubuntu 15.04 with LVM and LUKS, manually partitioning in order to have a separate /home partition. So far I have booted the Xubuntu live CD and went through these steps: ...
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0answers
82 views

Problems to mount a crypto-luks in ubuntu

I have a drawback of novice person, I encrypt my hard drive with crypto - luks in ubuntu and now I can not access my data , I have tried everything I seen but always gives a different error , please ...
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2answers
62 views

Mask my Desktop for my ubuntu-based Wifi hotspot/router

I used Ubuntu to build a Wifi HotSpot. You can join the Wifi and access Internet. It is used in some area without lots of Internet access in Africa, Island and Greenland. Since we're responsible for ...
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150 views

LUKS encrypted: 2 keys, a passphrase and a keyfile, how to priorize keyfile?

I have installed Linux the LUKS way. I provided the passphrase. Later, I made a keyfile (with a random key) and added it to /etc/crypttab specifying its path. I get something like: # <target ...
2
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1answer
116 views

Boot folder on external USB pendrive, how to boot to?

My machine is LUKS-encrypted and boot works a charm (asking the passphrase at launch). I want to use a keyfile on a USB pendrive, thus the user has a dongle that the user must plug to launch Linux ...
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0answers
29 views

boot folder on my USB pendrive

I copied my boot folder onto a USB pendrive. (My FS is LUKS encrypted, I put the keyfile on the dongle, I want the pendrive to be plugged if a user wants to use the machine) I did it: put whole ...
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106 views

LUKS encryption + USB dongle keyfile = if not plugged, disallow passphrase prompt?

My laptop is LUKS-encrypted. I put boot & keyfile on a USB dongle: if the dongle is not plugged at boot, you cannot enter linux. But when I dont plug the USB dongle (which contain the keyfile), ...
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0answers
118 views

Nested crypto(luks) partitioning in ubuntu preseed

It is easy to define nested luks partitioning in ubuntu environment using following commands cryptsetup luksFormat /dev/sda(i) {entering passphrase: xxxxx} cryptsetup luksOpen /dev/sda(i) some_name1 ...
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0answers
82 views

mount encrypted disk with right permissions

I encrypted an external drive on my desktop computer, and I can conveniently mount/unmount it from Nautilus just entering the password. The problem is that when I mount it on my notebook (from ...
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0answers
158 views

LUKS encryption, switch from passphrase to keyfile

Using LUKS encryption, I set it during the Ubuntu installation. I entered a passphrase. But now I want to use a keyfile and I dont manage to find the right process to. How can I make the switch ...
3
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1answer
373 views

LUKS encryption, header on a dongle USBdrive?

I am going to install Linux the LUKS/LVM way, in order to have an encrypted disk. In addition, I would like to put the header and passphrase in a USB Key. Thus, instead of entering the passphrase, I ...
2
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1answer
304 views

cryptsetup luksAddKey throwing 'Maximum keyfile size exceeded' error - fix? 14.04

I am attempting to add a homekey entry to my /etc/crypttab in order to prevent entering a 3rd pass upon login on a 14.04 install w/ LUKS (root/swap/home). When I attempt to add the key using ...
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0answers
62 views

Unlocking at boot time Luks LVM

This is my first question, but let me start by saying how much of a big fan I am up this site. Every question I ever had over the last 4 years has been answered here and I am so grateful for the help ...
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2answers
2k views

Mounting encrypted LUKS partition from Live CD

Error to begin with, can't boot I had to do a hard reboot of my computer, and when booting up it (initramfs I think) gave an error: mount: mounting /dev/mapper/ubuntu--vg-root on /root failed: ...
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0answers
188 views

Unlocking luks encrypted partition automatically Ubuntu 14.04

I've been trying to resolve an issue unlocking a luks encrypted partition on boot using Ubuntu 14.04. I've set it up to automatically unlock after the root partition's password has been entered by ...
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1answer
403 views

Mount external hard drive with LUKS Encryption + LVM

I recently switched to a bigger Hard Drive by running dd if=/dev/old of=/dev/new However now I am trying to get some files that changed after copying, so I connected the old Hard Drive over USB. The ...