[Trisquel-users] How to encrypt non-boot drive

[xnchgyqk]

Hi.

I'm trying to encrypt a hard drive which is not the boot drive (the boot  
drive is already encrypted).

I tried doing this with "Disks".  I selected the drive in question and  
formatted it GPT.  Then I added a partition LUKS + Ext4 and chose a name and  
passphrase.  Now the partition is visible in Caja.  So far so good.

Then, I unlocked the partition using the passphrase.  I found I can do this  
right from Caja, or from Disks, or I can even use Disks to configure this to  
happen automatically on startup.

One way or another, after the partition is unlocked, it is no longer visible  
in Caja.  What gives?

Thanks in advance.