aaric@posteo.net, on dim. 11 mars 2018 16:21:51 -0400, wrote: > Start ext2fs: ext2fs: device: (hostdisk//dev/sda,msdos1): No such device or > address. In your /etc/grub.d/30_os-prober , please try to replace the grub_device= and mach_device= lines with grub_device="`${grub_probe} --device ${DEVICE} --target=compatibility_hint`" mach_device="`echo "${grub_device}" | sed -e 's/\(hd.*\),msdos\(.*\)/\1s\2/'`" Samuel