On 12 June 2014= 13:42, Andreas <dm-crypt_mailing_list@schmidt9.de>= wrote:

=20 =20 =20
hello,

having used a Windows-based Truecrypt encryption with pre-boot-authentication for some years, I want to do the corresponding action under Linux. I am using Linux Mint 17 Cinnamon. The system has one harddisk.

I already found, read and unsuccessfully tried out

- http://blog.andreas-haerter.com/2011/= 06/18/ubuntu-full-disk-encryption-lvm-luks.sh
and
- http://community.linuxmint.com/tutorial/view/344

Both tutorials / scripts refer to older Linux versions.
Since I am new to Linux I do not know, what syntaxes may have changed.

I got things working so far, using a VirtualBox machine, (so Mint 17 x32 is used):

- 200 MB primary partition ext3 on /dev/sda1 (unencrypted) as /boot
- 9,81 GB crypt-luks on /dev/sda2 (as seen from GParted)

This configuration boots up GRUB, Mint's green/white dots start flashing.
Then I think a timeout appears - message reads:

"Gave up waiting for root device ...
ALERT /dev/mapper/ubuntu-root does not exist - dropping to a shell."

When I boot up from CD, start "Preferences - Disks"
I can use the built-in unlock feature and I see

=C2=A0/dev/mapper/luks-0a410528-cde8-440c-891f-ef6068aad0b3= =C2=A0=C2=A0 LVM2 Physical Volume (LVM2 001)
which consists of

/dev/ubuntu/swap (4.1 GB)
/dev/ubuntu/root (5.2 GB)
/dev/ubuntu/home (1.2 GB)

So, the partions exist and can be unlocked.

I also can mount e.g. /dev/ubuntu/root
Mounted at /media/mint/fc34585c-ca63-4b28-aaca-5a00f3776856

There is /etc/fstab present.
It reads

(...)
/dev/mapper/ubuntu-root /=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ext4=C2=A0=C2=A0=C2=A0 errors=3D= remount-ro 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 1
# /boot was on /dev/sda1 during installation
UUID=3D30b080b5-9b39-46c9-9b61-2320efde52dc /boot=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ext3=C2=A0=C2=A0=C2=A0 defaults=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0 2
/dev/mapper/ubuntu-home /home=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0 ext4=C2=A0=C2=A0=C2=A0 defaults=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 2
/dev/mapper/ubuntu-swap none=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0 swap=C2=A0=C2=A0=C2=A0 sw=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 0

There is a good deal accomplished on my way to a disk encryption, but some small problems still prevent it from running flawlessly.

I wish to have the system booting up and asking for the passphrase to unlock all three partitions at once.

Help would be appreciated.

regards,
Andreas

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