How to change passphrase for FreeBSD 11.0 encrypted ZFS root?

David Christensen dpchrist at
Wed Jun 14 16:13:52 UTC 2017

On 06/14/2017 05:35 AM, Jov wrote:
> On 06/14/2017 2:20 PM,"David Christensen wrote:
>> I issued the following command:
>> toor at freebsd:/root # geli setkey -n 0 /dev/ada0s1d Enter new
>> passphrase: Reenter new passphrase: Note, that the master key
>> encrypted with old keys and/or passphrase may still exists in a
>> metadata backup file.
>> Now when I boot, I enter the passphrase at the boot menu, a bunch
>> of stuff scrolls by, and then I see:
>> Enter passphrase for ada0s1d:
>> I enter the new passphrase and I see:
>> GEOM_ELI: Wrong key for ada0s1d.  Tries left: 2. Enter passphrase
>> for ada0s1d:
> You change the passphrase without key file? the default geli boot
> will read key files in /boot dir,the key file name is set in
> /boot/loader.conf, you shoud remove the settings if you not set it.

Thank you for the clue.

I would now like to edit /boot/loader, to see if I can adjust the 
settings so that GELI will decrypt my root partition using just a 

When I boot the FreeBSD 11.0 i386 installer into single-user mode:

# mount /dev/ada0s1a /mnt
mount /dev/ada0s1a: Invalid argument

Why is mount(8) complaining?

# ls -l /dev/ada0s1a
crw-r-----  1 root  operator  0x5b Jun 14 15:53 /dev/ada0s1a


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