On Fri, Aug 16, 2019 at 12:51:28PM -0700, Bengt Richter wrote: > For your purposes, it might be worth trying asking for interesting > specifics (see lsblk -h for more), e.g. > > $ lsblk -o mountpoint,name,size,fstype,label,partlabel,partuuid,uuid > > Maybe that partuuid '31393730-3031-3031-3139-343934363833' might show up? > I just checked for my working USB image and the boot/grub/grub.cfg contains that line bzImage --root=31393730-3031-3031-3139-343934363833 --system=/gnu/store/2j79kbvsxqq7lmzp3isnran1dpcp2z5j-system --load=/gnu/store/2j79kbvsxqq7lmzp3isnran1dpcp2z5j-system/boot quiet but I cannot find that partition either. It seems to be created by grub-mkrescue from make-iso9660-image, but I am not sure. @Calvin: The manual contains this line in section _Building the Installation Image_ (with Mark’s --system=i686-linux added): guix system disk-image --file-system-type=iso9660 --system=i686-linux \ gnu/system/install.scm If you omit --file-system-type=iso9660, a USB image will still work and I believe no --root=31393730-3031-3031-3139-343934363833 will be inserted in GRUB. Regards, Florian