On Tue, Mar 31, 2020 at 12:40:23AM +0200, Christian E. Jørgensen wrote: > Am I correct in assuming that GRUB relies on something like a BIOS for > support of NVMe devices? I'm running coreboot with GRUB as the payload > (on amd64 hardware) and GRUB does not seem to detect my NVMe device. > > If I use SeaBIOS instead of GRUB as the coreboot payload, then SeaBIOS > detects the NVMe device without issue.
In general GRUB tries to use BIOS/EFI/firmware calls to access all devices. However, it also contains some drivers for devices which are not accessible via BIOS/EFI/firmware or you find that BIOS/EFI/firmware is buggy in one way or another and you have to use the GRUB's own driver to access those devices, e.g. AHCI. Daniel _______________________________________________ Grub-devel mailing list Grub-devel@gnu.org https://lists.gnu.org/mailman/listinfo/grub-devel
