On Thursday, 24 July 2025 17:37:35 British Summer Time Dennis Clarke wrote: > On 7/24/25 11:34, Michael wrote: > > On Thursday, 24 July 2025 15:17:02 British Summer Time Dennis Clarke wrote: > >> Dear gentoo folks :
> <snip> > > Thank you for the reply and the hints. You're welcome, but I'm the wrong guy to advise on this topic since I have no experience with your platform and in addition I do not use dracut! :-) > > The UUID 0AC0-79CF is from a DOS filesystem, most likely your ESP. > > I have created a FAT32 fs on the boards storage thing that seems to be > called /dev/mmcblk0 and the UUID data there looks reasonable. I will > insert some newlines here for easy reading : > > p550# blkid | grep 'mmc' > /dev/mmcblk0p3: UUID="d2821a3b-7ad0-44dc-989b-8b5b0c80b947" > BLOCK_SIZE="4096" TYPE="ext4" > PARTUUID="b9db2337-1aaa-4d76-a87e-ee627e9ce8c9" > > /dev/mmcblk0p1: LABEL_FATBOOT="esp" LABEL="esp" UUID="6706-97A3" > BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="EFI System" > PARTUUID="2df81552-4661-463a-8f61-0ccf7f13e58b" > > /dev/mmcblk0p2: UUID="9be92059-9156-4cdd-ba4e-9cf12bb2548f" > TYPE="swap" > PARTUUID="f82f1a4c-8065-430a-ac7f-07c014962fc4" > > It looks like the EFI or FAT32 partition has UUID "6706-97A3". Your EFI System Partition (ESP) has a Partition UUID: PARTUUID="2df81552-4661-463a-8f61-0ccf7f13e58b" and on it resides a VFAT format filesystem with UUID: UUID="6706-97A3" > > The UUID d2821a3b-7ad0-44dc-989b-8b5b0c80b947 is from a linux fs. Most > > likely from your / partition. > > Looks correct. Yes, from what you're showing above the /dev/mmcblk0p3 block device has a Partition UUID of: PARTUUID="b9db2337-1aaa-4d76-a87e-ee627e9ce8c9" and on it there is an ext4 format filesystem with UUID: UUID="d2821a3b-7ad0-44dc-989b-8b5b0c80b947" So far, so good. :-) > > Run 'blkid' to find out which is which on your drive, or: > > > > ls -alF /dev/disk/by-uuid > > p550# > p550# ls -alF /dev/disk/by-uuid > total 0 > drwxr-xr-x 2 root root 160 Jul 24 15:10 ./ > drwxr-xr-x 9 root root 180 Jul 24 15:10 ../ > lrwxrwxrwx 1 root root 15 Jul 24 15:10 6706-97A3 -> ../../mmcblk0p1 > lrwxrwxrwx 1 root root 10 Jul 24 15:10 > 87ac8f75-7a82-4e5a-be96-94bfbe98117e -> ../../sda3 > lrwxrwxrwx 1 root root 15 Jul 24 15:10 > 9be92059-9156-4cdd-ba4e-9cf12bb2548f -> ../../mmcblk0p2 > lrwxrwxrwx 1 root root 10 Jul 24 15:10 F77A-55F6 -> ../../sda1 > lrwxrwxrwx 1 root root 10 Jul 24 15:10 > ab60f3c4-7658-44f9-b944-139378afc9f6 -> ../../sda2 > lrwxrwxrwx 1 root root 15 Jul 24 15:10 > d2821a3b-7ad0-44dc-989b-8b5b0c80b947 -> ../../mmcblk0p3 > p550# > > That also looks perfectly reasonable for the /dev/mmcblk0 storage. Your output above also shows a hard drive /dev/sda. On this drive you have a second FAT formatted partition, with UUID F77A-55F6, as well as two other partitions. > > Grub will need this to know where it can pick up the initramfs.img. > > > > For details check: > > > > https://wiki.gentoo.org/wiki/Dracut > > https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Bootloader > > I have been digging around various places trying to figure this out. > The root filesystem UUID looks to be fine. The EFI stuff is a problem. Your dracut error references a different UUID for ESP: "[ 229.517264] dracut Warning: /dev/disk/by-uuid/0AC0-79CF does not exist" Did you have the correct ESP mounted within your chroot'ed fs? > However, when I look into that EFI filesystem I do not see any sort > of an initramfs file : > > p550# > p550# mount /dev/mmcblk0p1 /mnt/mmc_efi > p550# find /mnt/mmc_efi > /mnt/mmc_efi > /mnt/mmc_efi/EFI > /mnt/mmc_efi/EFI/ubuntu > /mnt/mmc_efi/EFI/ubuntu/grub.cfg > /mnt/mmc_efi/EFI/ubuntu/grubriscv64.efi > /mnt/mmc_efi/EFI/ubuntu/grub.cfg_ubuntu > /mnt/mmc_efi/EFI/debian > /mnt/mmc_efi/EFI/debian/grub.cfg_ubuntu > /mnt/mmc_efi/EFI/boot > /mnt/mmc_efi/EFI/boot/bootriscv64.efi > /mnt/mmc_efi/EFI/gentoo > /mnt/mmc_efi/dtb > /mnt/mmc_efi/dtb/eswin > /mnt/mmc_efi/dtb/eswin/eic7700-hifive-premier-p550.dtb > /mnt/mmc_efi/ubootefi.var > p550# > > At the very least we can see the FAT32 partition has a different > UUID number. You will not find a kernel or initramfs image in the ESP. You will find these in your /boot directory. The ESP will only contain the EFI executable of the bootloader, in the case of GRUB this would be 'grubriscv64.efi' by ubuntu, or 'bootriscv64.efi' by gentoo.
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