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Re: experiences with debian amd64 EFI test CD, build 3

On Tue, Sep 04, 2012 at 09:19:58PM +0200, Carolin Latze wrote:
>Hi Steve,

Hi Carolin,

>ok, I was partly able to reproduce my last setup. The good news is,
>it was really partly my fault.

OK. :-)

>Back to what happened: my original system (win/debian) runs on a
>500GB HD. At the very beginning, I installed Win7 as UEFI and debian
>as MBR since I was not aware that I even have an UEFI board
>(... :-)). Before I thought about reinstalling Debian (and before I
>discovered the EFI CDs) I tried to fix that by running a lot of
>commands ( I really don't know anymore which ), that created a
>grubx64.efi on the existing EFI boot partition. That did not help
>(grub would not show up) so I reinstalled Debian using the EFI CDs
>and ... got the error "no EFI boot partition found". Since that PC is
>not mine, I fear to reinstall Debian there for the moment. But I
>guess all those commands I tried to get grub running at first, could
>have caused that error later (since I changed some files on the
>original EFI boot partition)


>That is why I tried to install the same setup on a spare 2TB HD. As I
>mentioned, this does not work since the Debian installer stops
>working after I choose an option like "text mode installer",
>"graphical mode installer", "text mode rescue". No matter which
>option I choose, the CD stops spinning and nothing happens. I cannot
>even pull a log at this moment, so I fear I cannot provide more debug
>information here (or is there another way?) Is there hope that the
>installer will work with 2TB HDs soon?

Oh. I expect it to already, in fact. That sounds like a grub or kernel
bug on your hardware, to be honest. Can you try adding "debug" to the
kernel command line before you boot? (hit 'e' to edit at the grub

>So I tried with a spare 250GB HD: fresh Win, fresh Debian. The
>installer is able to detect the Win EFI boot partition and installs
>grub into that partition. However grub will not detect the Win OS. I
>still have to create that grub script to add the Win entry to the
>grub menu. I guess this is a grub problem rather than a problem of
>that installer?

Yes, I think so. I don't know how well the grub-probe code will cope
with Win EFI at the moment.

>Sooo I guess the only way to reproduce that error is to go back to
>the original PC and ask if I can reinstall Debian there. However I am
>not sure that is of help since I guess (or hope) that most of the
>people won't start messing around with the EFI boot partition and try
>install a proper system afterwards :) ?

I'd hope so :-) One of the issues with EFI so far is that it's still a
bit fragile I think...

Steve McIntyre, Cambridge, UK.                                steve@einval.com
"...In the UNIX world, people tend to interpret `non-technical user'
 as meaning someone who's only ever written one device driver." -- Daniel Pead

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