Follow-up Comment #5, bug #64475 (project grub): Hello, I used "qemu-img create -f raw example.img 200M" to created a 200Mb image file, and "losetup /dev/loop0 example.img", mounting example.img as a loop device.
Then I formatted the /dev/loop0 by mkfs.btrfs with default options, "mount /dev/loop0 /boot", mounting the loop0 device to /boot, copied the amd-ucode.img file to /boot/amd-ucode_src.img, and I noticed that I had enabled the zstd compression for my root partition, so I ran "btrfs filesystem defragment -r -v -czstd /boot/" to compress the amd-ucode_src.img file. After that, started the beesd service for loop0, install the amd-ucode package by package manager, then I confirmed the bees deduplicated the amd-ucode.img. umount the /boot and "losetup -d /dev/loop0", I compressed the example.img file with zstd. I am not sure this image could cause the grub boot failed, just control the variables as same as possible. Thanks! (file #54989) _______________________________________________________ Additional Item Attachment: File name: example.img.zst Size:61 KB <https://file.savannah.gnu.org/file/example.img.zst?file_id=54989> _______________________________________________________ Reply to this item at: <https://savannah.gnu.org/bugs/?64475> _______________________________________________ Message sent via Savannah https://savannah.gnu.org/