1. generate the install image guix system disk-image --file-system-type=iso9600 --verbosity=3 -- root=installation-os-x86_64.iso --system=x86_64-linux -e '(@ (gnu system install) installation-os)'
2. examine the resulting iso readlink installation-os-x86_64.iso | xargs file output: /gnu/store/3xp541s4zrxass6h6rcwfz7bc33wv84p-disk-image: DOS/MBR boot sector; partition 1 : ID=0x83, active, start-CHS (0x0,32,33), end- CHS (0xe3,198,58), startsector 2048, 3657239 sectors; partition 2 : ID=0xef, start-CHS (0xe3,198,59), end-CHS (0xe8,224,16), startsector 3659287, 81921 sectors 3. Compare this output with what file says about the official installation iso: wget https://ftp.gnu.org/gnu/guix/guix-system-install-1.0.1.x86_64-linu x.iso.xz unxz guix-system-install-1.0.1.x86_64-linux.iso.xz readlink guix-system-install-1.0.1.x86_64-linux.iso output:guix-system-install-1.0.1.x86_64-linux.iso: DOS/MBR boot sector; GRand Unified Bootloader, stage1 version 0x79, boot drive 0xbb, stage2 address 0x8e70, 1st sector stage2 0xb8db31c3, stage2 segment 0x201; partition 1 : ID=0xee, start-CHS (0x0,0,2), end-CHS (0x3f6,38,4), startsector 1, 2694403 sectors, extended partition table (last) It appears file discovered the GRand Unified Bootloader in the official iso but not in the generated iso. When I try to use the generated iso in virt-manager, it claims there are no bootable drives. I think this is because the generated iso has no GRUB. The manual says to specify the file gnu/system/install.scm instead of the value (@ (gnu system install) installation-os)) but ultimately they give guix the same value, so I think that wouldn't make a difference. removing --system=x86_64 does not trigger a full rebuild, so it looks like guix does not expect to build anything different. Guix describe outputs: Generation 47 Aug 23 2019 09:22:24 (current) guix d78bc23 repository URL: https://git.savannah.gnu.org/git/guix.git branch: master commit: d78bc23411b1351ff9495a511c22b27d17f9226f GUIX_PACKAGE_PATH="/home/jesse/Documents/broken-guix/Broken-Guix- Packages" Thanks -Jesse