[nSLUG] Ubuntu Hard Disk Encryption

Rory rory at unixism.org
Wed Dec 3 22:31:37 AST 2014


This really seems more like a hardware issue related to the upgrade.  
Video drivers, maybe?

FWIW: none of the encryption options provided by Ubuntu involve changes 
to the BIOS, all encryption is performed on top of regular partitions.

On 14-12-03 09:15 AM, William Marchant wrote:
> Hi All,
> When I installed ubuntu 14.04, several months ago, I enabled hard disk 
> encryption.  The computer is an old one, and there were some things I 
> didn't like about the way the LTS version worked, so I decided to 
> update to 14.10.
> The install was stopped by a request to enable Microsoft TTFs. This 
> window could not be closed, authorized or bypassed, and after several 
> hours of waiting for something to happen, I switched off the machine.
> I downloaded a copy of 14.10 and burned it to a DVD on another 
> computer, and attempted to install from the DVD.
> The BIOS needed changing to permit the boot, but I found that it 
> could  not be changed.  The message on the BIOS screen said that 
> drives noted in brackets could not be made bootable.  They were all 
> bracketed.  I assume the HD encryption system has set the BIOS so that 
> the DH cannot be violated by an unauthorised user.
>
> When I try to restart the faulty machine, I am asked for my Disk 
> Encryption Password.  That part works, however, I then get a small 
> blank window asking me what I want to do.  There is a flashing 
> cursor,  but it goes away with any action of the keyboard or mouse, 
> and the computer remains locked.
>
> I have  backup of my home directory, so I am not stuck, but I am stuck 
> trying to recover the usefulness of the old computer.  Does anyone 
> have a suggestion, or better still, a solution?
> Bill
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