Hi Ludo, sorry for the many e-mails - I'm recollecting all the workarounds :) >--8<---------------cut here---------------start------------->8--- >loading '/gnu/store/n2zvdxp25kvg7wy5xr1y5n9r4502fw80-linux-vm-loader'... >environment variable `PATH' set to `/gnu/store/vxl918zb9brnrgaipzsykpy3mzcafvcr-qemu-minimal-2.11.1/bin:/gnu/store/lvkaf3xlvy57bvap51xlzb209ilbkgcv-parted-3.2/sbin:/>gnu/store/nm305rpb2mvridkyj4l3636nc9ql4lf9-e2fsprogs-1.43.6/bin:/gnu/store/nm305rpb2mvridkyj4l3636nc9ql4lf9-e2fsprogs-1.43.6/sbin:/gnu/>store/0sq2nflm42x0znkv44add0gk82khkcb6-dosfstools-4.1/sbin:/gnu/store/0hl513mnpkhszm2hjai2w9cxmpxs0vgq-sed-4.4/bin:/gnu/store/1h44pkgdd7n6s3i2vjh54awsvfmc219j->grep-3.1/bin:/gnu/store/kgzvfby2ggi1xawsh5vjh4s93qk2dp9k-coreutils-8.28/bin:/gnu/store/k7r2m2wgj8x8jjhccwjsiimp0dlzxb7i-findutils-4.6.0/bin:/gnu/store/>ahxc89r6npzf2bbl8yg5vdjicskzzjf3-gawk-4.1.4/bin' >creating partition table with 2 partitions (20.0 MiB, 40.0 MiB)... >Warning: The resulting partition is not properly aligned for best performance. >creating ext4 partition... ... [ 3.235493] FAT-fs (vda2): IO charset iso8859-1 not found ERROR: In procedure mount: In procedure mount: Invalid argument --8<---------------cut here---------------end--------------->8--- >Here the nls_iso8859-1 module doesn’t get loaded and modprobe isn’t even >invoked, although my understanding is that it should (per ‘load_nls’ in >nls_base.c in the kernel, called from vfat/inode.c). Yeah, that was an evil problem. There are two different ways linux-boot can boot: * Either it loads a full system in which case /run/booted-system will contain kernel module files which can and will be loaded * Or it loads a "--load" file only - in which case there's no system modprobe, but switch-root just switched our pure-Guile modprobe away, so now we are out of modprobes :)