2016-11-07 14:28 GMT+03:00 Nicola Ferrari (#554252) <nick-liste@...>:
> Hi list!
>
> I recently experienced a problem with the TDE Ubuntu 14.04 amd64 iso
> image: it wasn't accepted as VM cd image in virtualbox.
>
> To exclude a vbox problem, I wrote to their mailing list: one user told
> me that, an iso image, to be consired a standard image, should have its
> size dividable by 2048. [1]
>
> I just had a try seeking the image with 2048 as block size and
> everything is working properly.
>
> Maybe images in the future should be "burned" with that block size?
>
>
> Thanks!
> Nick
>
>
> [1] https://www.virtualbox.org/ticket/14530
>
>
> --
> +---------------------+
> | Linux User  #554252 |
> +---------------------+
>

I'm not sure if this is still an issue for you, but I see no answers,
so I'll add a couple cents...

Just checked the size:

====================
wget --spider http://bg1.mirror.trinitydesktop.org/trinity/cdimages/ubuntu/release/R14.0.2/tde-ubuntu-14.04-desktop-r14.0.2-amd64.iso
2>&1 |grep Length
Length: 1309296640 (1.2G) [application/x-iso9660-image]
====================

It seems the image is correctly 2k aligned. Have you verified the
checksum after downloading it?