Grub loading. after USB install from 2nd USB install stick

Ubiquity installer could have been confused by both USB stick. it's not unusual.
Try first to reinstall Grub2 following this: https://help.ubuntu.com/community/Grub2#Reinstalling%20GRUB2 "Copy from Live CD". The installation process is simpler and so more reliable.
If it fails again, run following procedure:
----------------------
There is a standard script provided to analyse boot configuration. Could you download script at:
   http://sourceforge.net/projects/bootinfoscript/
Then in a terminal (Ctrl+Alt+T) run command:
    sudo bash [path/to/the/download_folder]/boot_info_script.sh
This will produce a file named: RESULTS.txt. Paste content of this file in http://paste.ubuntu.com/ and provide in this thread the link to Web page. Please don't post file directly in thread, else it will make thread difficult to read.

Thank you for helping with this. I tried all of the methods in the link for
restoring Grub (from the most basic to the most complete, including purge
and reinstall grub) and when rebooting got the same result; hang at flashing
cursor. (or hang at "Grub loading" if I hold shift when booting.

I have run the script as you suggest and pasted the RESULTS.txt into the
paste bin:
http://paste.ubuntu.com/647003/

Maybe initrd or vmlinuz put in the "system" USB stick from the USBliveCD
stick as part of the install has a problem; some incomparability with
booting from a USB?

Thanks for persevering with this!
Andrew

On Mon, Jul 18, 2011 at 8:06 PM, delance <
<email address hidden>> wrote:

> Your question #165172 on grub2 in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/grub2/+question/165172
>
> Status: Open => Answered
>
> delance proposed the following answer:
> Ubiquity installer could have been confused by both USB stick. it's not
> unusual.
> Try first to reinstall Grub2 following this:
> https://help.ubuntu.com/community/Grub2#Reinstalling%20GRUB2 "Copy from
> Live CD". The installation process is simpler and so more reliable.
> If it fails again, run following procedure:
> ----------------------
> There is a standard script provided to analyse boot configuration. Could
> you download script at:
> http://sourceforge.net/projects/bootinfoscript/
> Then in a terminal (Ctrl+Alt+T) run command:
> sudo bash [path/to/the/download_folder]/boot_info_script.sh
> This will produce a file named: RESULTS.txt. Paste content of this file in
> http://paste.ubuntu.com/ and provide in this thread the link to Web page.
> Please don't post file directly in thread, else it will make thread
> difficult to read.
>
> --
> If this answers your question, please go to the following page to let us
> know that it is solved:
>
> https://answers.launchpad.net/ubuntu/+source/grub2/+question/165172/+confirm?answer_id=0
>
> If you still need help, you can reply to this email or go to the
> following page to enter your feedback:
> https://answers.launchpad.net/ubuntu/+source/grub2/+question/165172
>
> You received this question notification because you asked the question.
>

http://paste.ubuntu.com/647003/ looks OK except that there is no swap partition on 8GB USB stick.
The MBR on sda looks on same device, UUID is ok.
Sorry, I have no idea of what can be the issue.

Thank you for the help. I just found a bios update for the motherboard and
that has solved it!
This was a desperation measure as it was not clear there was a bios problem
(after all, I could boot from the install USB). For some reason the
bootloaders for the install USB and the installed USB must be different!

Many thanks again! Case closed.

On Tue, Jul 19, 2011 at 1:26 PM, delance <
<email address hidden>> wrote:

> Your question #165172 on grub2 in Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+source/grub2/+question/165172
>
> delance posted a new comment:
> http://paste.ubuntu.com/647003/ looks OK except that there is no swap
> partition on 8GB USB stick.
> The MBR on sda looks on same device, UUID is ok.
> Sorry, I have no idea of what can be the issue.
>
> --
> You received this question notification because you asked the question.
>

Thanks Eliah Kagan, that solved my question.