Re: Booting from NVMe controller enters GRUB rescue

[vinayak holikatti]

On Tue, Jan 21, 2014 at 1:50 PM, Andrey Borzenkov <address@hidden> wrote:
> On Tue, Jan 21, 2014 at 12:14 PM, vinayak holikatti
> <address@hidden> wrote:
>> On Mon, Jan 13, 2014 at 11:51 PM, Jordan Uggla <address@hidden> wrote:
>>> On Thu, Jan 9, 2014 at 10:53 PM, vinayak holikatti
>>> <address@hidden> wrote:
>>>> Hi All,
>>>>
>>>> We have developed Legacy OptionROM for NVMe controller device. We are
>>>> able to boot to all Windows 7 and later OS. But we are facing issue in
>>>> booting Fedora 20 x86_64 OS. Fedora 20 gets installed successfully on
>>>> NVMe device. While booting from NVMe device we are observing error as
>>>> follows and enters grub rescue. We are clueless about what is
>>>> happening here. We would like to know how to over come this issue and
>>>> boot to Fedora 20 OS from our controller.
>>>>
>>>> "error : no such device: 44d1bf09-4e8a-4f46-aea6-09e364abf5cb.
>>>>  Entering rescue mode...
>>>>  grub_rescue>"
>>>
>>> Please run "ls" at the rescue prompt and post the output.
>>
>> The ls command at grub_rescue shows as below
>>
>> grub_rescue>ls
>> (hd0)
>>
>> And set command output as below
>>
>> grub_rescue>set
>> prefix = (hd0)/grub2
>> root = hd0
>>
>> I think the information of prefix and root are wrongly set. It should be
>>
>> prefix = (hd0,1)/grub2
>> root = (hd0,2)
>>
>> /boot partition corresponds to /dev/nvme0n1p1
>> / paration corresponds to /dev/nvme0n1p2
>>
>
> Which grub version do you use? Could you test current GIT master? If
> it still puts prefix wrong, please
> show output of "grub-install --verbose /dev/path-to-boot-block"
> (/dev/nvme0n1 or /dev/nvme0n1p1 or wherever).
>

We are using grub2. Do you want us to install grub and not grub2?
As grub2-install doesn't have verbose option.

We will try latest grub from git repo. Should we try grub or grub2?

> I would not be surprised if grub is confused by non-standard disk
> naming, but there were many changes recently so it may be fixed
> already.



-- 
Regards,
Vinayak Holikatti