Re: [gentoo-user] BIOS can not find boot partition
On 1/24/21 5:03 AM, Michael wrote: > On Sunday, 24 January 2021 05:49:28 GMT the...@sys-concept.com wrote: >> I'm missing something as system can not find boot device >> >> fdisk /dev/nvme0n1 >> Disklabel type: gpt >> >> Device StartEndSectors Size Type >> /dev/nvme0n1p1 2048 6143 4096 2M BIOS boot >> /dev/nvme0n1p2 6144 268287 262144 128M EFI System >> /dev/nvme0n1p326828813168631048576 512M Linux swap >> /dev/nvme0n1p4 1316864 315889663 314572800 150G Linux filesystem >> >> I don't want to use EFI. > > If you do NOT want to use EFI why have you set up /dev/nvme0n1p2 as an ESP > type partition? > > With just 4 partitions in total there's also the question of your choice to > use GPT instead of the legacy MBR partition table. :-/ I have 5-partitions, all together, and use fdisk -t gpt /dev//dev/nvme0n1 > >> /boot = dev/nvme0n1p2 (ext4) file system >> >> When I run: >> grub-install /dev/nvme0n1p2 >> Installing for x86_64-efi platform. >> grub-install: error: cannot find EFI directory. > > First, the handbook clearly directs to install GRUB to a disk not a partition: > > https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Bootloader > > However, you *can* install GRUB's boot code in a partition instead of a disk, > if you wish to chainload the partition's GRUB from another boot loader, e.g. > MSWindows, rEFInd, another GRUB, etc. I don't see you want to do this, from > what you have shared. You are correct here, this was my mistake, it should be (it was late at night didn't notice it) : grub-install /dev/nvme0n1 (now it works) not: grub-install /dev/nvme0n1p2 > Second, I think the error you get is caused because you have created ESP type > partition, but there is no EFI/ directory in it, which the UEFI boot protocol > requires. > > >> but there is /boot/grub > > Yes, the error you got does not complain about /boot/grub missing, but about > the absence of an "... EFI directory". > > >> Running: grub-mkconfig -o /boot/grub/grub.cfg is OK (no errors) >> >> fstab: >> /dev/nvme0n1p2 /boot ext4 > noauto,noatime1 2 >> >> The BIOS has CSM compatibly mode enable. >> When I try to boot, system can not find bootable partition. >> >> Am I suppose to put any file system on /dev/nvme0n1p1 (2Mb partition) the >> installation manual did not mention anything. > > No filesystem formatting is required for the small /dev/nvme0n1p1 BIOS boot > partition - GRUB will install its 2nd stage core image in there. > > I'd question if your boot partition should be set as ESP type in the first > place. Set it as a Linux partition, reformat it with ext2, or if you want as > ext4, mount it as /boot and then install GRUB on the disk as the handbook > instructs. Yah, I change this partition to "Linux filesystem" /dev/nvme0n1p2 6144 268287 262144 128M Linux filesystem Without reinstalling anything, it works (it was ext4).
Re: [gentoo-user] BIOS can not find boot partition
Hello, I don't want to use EFI. Then you probably should not be attempting to boot off an NVMe drive, as that is only possible if the drive has an onboard BIOS-mode boot ROM; AFAIK those are only found on some of the earliest NVMe drives. Moreover... grub-install /dev/nvme0n1p2 Installing for x86_64-efi platform. You are installing GRUB in EFI mode. My guess is that it's because you're running the command from a system that was booted in EFI mode, so grub-install picks EFI by default. For BIOS you want the 'i386-pc' platform, and you _must_ install GRUB to the block device itself (/dev/nvme0n1) And once again, whether or not you'll be able to boot from that is very much open to debate. Am I suppose to put any file system on /dev/nvme0n1p1 (2Mb partition) the installation manual did not mention anything. That partition is only there to reserve space for the initial stages of GRUB when BIOS-booting from a GPT disk. It does not need to be formatted or mounted, and as long as it has the proper flags grub-install should be able to pick it up on its own. andrea
Re: [gentoo-user] BIOS can not find boot partition
On Sunday, 24 January 2021 05:49:28 GMT the...@sys-concept.com wrote: > I'm missing something as system can not find boot device > > fdisk /dev/nvme0n1 > Disklabel type: gpt > > Device StartEndSectors Size Type > /dev/nvme0n1p1 2048 6143 4096 2M BIOS boot > /dev/nvme0n1p2 6144 268287 262144 128M EFI System > /dev/nvme0n1p326828813168631048576 512M Linux swap > /dev/nvme0n1p4 1316864 315889663 314572800 150G Linux filesystem > > I don't want to use EFI. If you do NOT want to use EFI why have you set up /dev/nvme0n1p2 as an ESP type partition? With just 4 partitions in total there's also the question of your choice to use GPT instead of the legacy MBR partition table. :-/ > /boot = dev/nvme0n1p2 (ext4) file system > > When I run: > grub-install /dev/nvme0n1p2 > Installing for x86_64-efi platform. > grub-install: error: cannot find EFI directory. First, the handbook clearly directs to install GRUB to a disk not a partition: https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Bootloader However, you *can* install GRUB's boot code in a partition instead of a disk, if you wish to chainload the partition's GRUB from another boot loader, e.g. MSWindows, rEFInd, another GRUB, etc. I don't see you want to do this, from what you have shared. Second, I think the error you get is caused because you have created ESP type partition, but there is no EFI/ directory in it, which the UEFI boot protocol requires. > but there is /boot/grub Yes, the error you got does not complain about /boot/grub missing, but about the absence of an "... EFI directory". > Running: grub-mkconfig -o /boot/grub/grub.cfg is OK (no errors) > > fstab: > /dev/nvme0n1p2/boot ext4 noauto,noatime 1 2 > > The BIOS has CSM compatibly mode enable. > When I try to boot, system can not find bootable partition. > > Am I suppose to put any file system on /dev/nvme0n1p1 (2Mb partition) the > installation manual did not mention anything. No filesystem formatting is required for the small /dev/nvme0n1p1 BIOS boot partition - GRUB will install its 2nd stage core image in there. I'd question if your boot partition should be set as ESP type in the first place. Set it as a Linux partition, reformat it with ext2, or if you want as ext4, mount it as /boot and then install GRUB on the disk as the handbook instructs. signature.asc Description: This is a digitally signed message part.
