> From: 黄文超 [mailto:huang...@gmail.com]
> Sent: Friday, October 08, 2010 1:25 AM
> 
> Hi, I saw the previous mail showing that tboot will work on feroda 13.
> However, I'm wondering if it will work on Ubuntu 10.04, for I was
> suffering from installing the tboot for several days.

I don't know if 10.04 has TXT/tboot support compiled in or not.

> I've changed the default grub2 to grub, and made the same grub

You don't need to change bootloaders--tboot will work with grub2, but you need 
to duplicate the module names.

> configuration as in the previous mail, and change the kernel to
> 2.6.35-19 . It succeeded in launching the tboot.gz (including the
> begin_launch() and post_launch() ), and transferring the control to
> linux kernel, however, it fails, and stops while launching the kernel,
> showing the message like this:
> "ALERT! /dev/disk/by-uuid/.... does not exist. Dropping a shell!"

This looks like an error with either the 'root=' command line param or with 
module support in the initrd.  Can you paste your entire grub.conf file?

> I tried to boot pc with several configurations, in order to dig more
> information:
> 1. remove the sinit module in menu.lst
>  the kernel was launched successfully, which shows begin_launch() and
> launch_kernel(false) works. But it didn't enter into post_launch(),
> which means it was not a measured launch.
> 2. edit the source code in post_launch() where launch_kernel(true)
> turns to launch_kernel(false)
> It also failed and showed the message:"ALERT!......Dropping a shell!!"
> I thought launch_kernel(false)  worked fine in begin_launch() where
> the  policy was TB_POLACT_UNMEASURED_LAUNCH, and it would work as well
> in post_launch. However, it turned out that I was wrong.
> 
> So, until now, I still cannot figure out what's wrong with the
> configuration, and expect if someone would help me with this.
> Thanks very much
> 
> 
> 
> --
> Colahuang
> 
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experiences on the web. Be a part of the beta today.
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