A mistake at Chapter 6 has crashed the system
The reference book is LFS 7.0.
Host system is Ubuntu 11.10.
I will try to recall all the steps I have done before the problem appeared, but it can be not precise...
I had to reload the system after Chapter 5.3 "Stripping", then continued from Chapter 5.4. It seems that at Chapter 6.4. "Entering the Chroot Environment" the root directory was not changed, because the directory /sources was not accessible. But I did not pay attention and continued up to Chapter "6.7. Linux-3.1 API Headers". So all the directories and links of chapters 6.5 and 6.6 where created over another root directory.
Moreover, it seems I entered as a root when creating directories after the message ".. have no permissions" appeared.
Then I rebooted the PC and I am observing the black screen now. Grub2 screen allows to access to rescue mode, but I have no idea what to do there to repair the system.
Now the questions: Could you, please, explain me what can be done to repair my host system, and why the fault has happen?