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Re: EFI NVMe Grub does not see any disk

From: Andrei Borzenkov
Subject: Re: EFI NVMe Grub does not see any disk
Date: Thu, 20 Apr 2017 06:21:44 +0300
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0

[Not sure what happens but when I try to Reply TB hangs; sorry for
broken thread]

19.04.2017 21:45, Manuel Lauss пишет:
> Hi Andrei,
> On Wed, Apr 19, 2017 at 8:09 PM, Andrei Borzenkov
<address@hidden> wrote:
>> 19.04.2017 20:31, Manuel Lauss пишет:
>>> Hi Andrei,
>>> On Wed, Apr 19, 2017 at 7:15 PM, Andrei Borzenkov
<address@hidden> wrote:
>>>> 19.04.2017 14:47, Manuel Lauss пишет:
>>>>> Hello,
>>>>> I'm trying to get grub running on an EFI system which only has a
NVMe disk.
>>>>> My problem is that when grub is launched by EFI (from the ESP), it
>>>>> does not see any disks at all,
>>>>> 'ls' just prints "(proc)" and nothing more.  Is there a way to get
>>>>> grub to recognize the disk
>>>>> the firmware has loaded it from?
>>>>> It's installed this way, /boot/efi is /dev/nvme0n1p2, which is the
>>>>> ESP. Version is 2.02_rc2
>>>>> grub-install --efi-directory=/boot/efi --no-nvram --target=x86_64-efi
>>>>> --compress=xz --themes="breeze" /dev/nvme0n1p2
>>>> GRUB relies on EFI for disk access and needs BlockIO protocol on device
>>>> so it can work with it. It may be that EFI NVMe driver on your system
>>>> does not implement it. Can you boot EFI shell on your system? This
>>>> be used to verify what protocols are present for which device.
>>> Yes EFI Shell is available, and can be used to e.g. start the grub
efi binary
>>> on the nvme device just fine.
>> Could you run
>> dh -d
>> in EFI shell and send me result? You can redirect output to file on ESP
>> using standard syntax
>> dh -d > dh.out
> It is attached.  I guess entry 0x60 is the relevant NVMe one.

No, this is likely

 179: DevPath (..0x1,25-07-B0-71-C2-38-25-00))DiskIo BlkIo
     Controller Name    : SAMSUNG MZVKW1T0HMLH-00000
     Device Path        :
     Controller Type    : BUS
     Configuration      : NO
     Diagnostics        : NO
     Managed by :
       Drv[117] : Generic Disk I/O Driver
       Drv[118] : Partition Driver(MBR/GPT/El Torito)
     Parent Controllers :
       Parent[149] : NVMe Mass Storage Controller
     Child Controllers  :
       Child[17A] : NTFS File System [449MB]
       Child[17B] : FAT File System
       Child[17C] :
       Child[17D] : NTFS File System [74GB]
       Child[17E] :

and it looks entirely OK. Could you test current GRUB GIT or at least
2.02~rc2? If problem still persists, please open bug report on

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