19.04.2017 20:31, Manuel Lauss пишет: > Hi Andrei, > > On Wed, Apr 19, 2017 at 7:15 PM, Andrei Borzenkov <arvidj...@gmail.com> 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 could >> 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 > Is there a special grub module required to > get EFI BlockIO Protocol support? > You misunderstand. GRUB relies on and requires BlockIO protocol to be provided by platform driver. But NVMe device in principle is not required to implement it - EFI specification defines another protocol specifically for NVMe. EFI shell is (likely) using Simple File System protocol that can be implemented on top of anything. _______________________________________________ Help-grub mailing list Help-grub@gnu.org https://lists.gnu.org/mailman/listinfo/help-grub
