Mount a LUKS partition at boot

Posted by Adam Matan on Ask Ubuntu See other posts from Ask Ubuntu or by Adam Matan
Published on 2011-01-11T10:18:49Z Indexed on 2011/01/11 10:59 UTC
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10.04

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luks

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encrypted-partition

Hi,

I have installed an Ubuntu machine with two encrypted LUKS partitions: one for / and one for /home.

I've reinstalled the machine to upgrade to 10.04. Again, the / is installed using LUKS, and I'm able to mount the /home using:

mkdir /media/home
sudo cryptsetup luksOpen /dev/sda2 home
sudo mount -t ext3 /dev/mapper/home /media/home

The problem is, this cryptfs mapper disappears after boot, so I putting the appropriate line in fstab fails.

How do I set the cryptfs to prompt for password and unlock the drive at boot?

Thanks,

Adam

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