This is one possibility to do this. There are other and maybe even better ways to do this.

Generate a key for your encrypted harddisk:

dd if=/dev/random of=/home/bob/keyfile_sdb1 bs=4096 count=1

Then add your keyfile to encrypted harddisk: How to change your dm-crypt passphrase (step 3)
Create a mountpoint:
```
mkdir /mnt/space
```

Create a script e.g. in your homedirectory (/home/bob/mount_sdb1.sh):

#!bin/bash

#open harddisk
sudo /sbin/cryptsetup --key-file /home/bob/keyfile_sdb1 luksOpen /dev/sdb1 sdb1_crypt
#mount decrypted harddisk
sudo /bin/mount /dev/mapper/sdb1_crypt /mnt/space

Add this line to your /etc/sudoers that you must not enter a password
```
%admin ALL=(ALL) NOPASSWD:/sbin/cryptsetup, /bin/mount    
```
Add this script to "System - Einstellungen - Startprogramme"

After rebooting the harddisk should be mounted automatically

Kim Klotz

makandra.com

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Almost 12 years ago

License

Source code in this card is licensed under the MIT License.

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Posted by Kim Klotz to makandra dev (2012-03-21 12:28)

Linux: Mount second encrypted HDD automatically without entering a password

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