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Last active April 6, 2018 09:49
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Debian Strecth: GRUB RESCUE UNKNOWN FILESYSTEM
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debian-strect-grub-rescue-unknown-fs.md

Debian Strecth: GRUB RESCUE UNKNOWN FILESYSTEM

  • I encountered this problem in latest debian Strecth after a damn Windows 10 auto-update
    grub-rescue: unknown filesystem.
    the original on how to fix is here https://askubuntu.com/a/834631

Step-by-step

  • boot debian jessie/strecth live-cd to usb/dvd
  • mount /dev/sdaX /mnt # X is where our debian partition installed
  • for i in /sys /proc /run /dev; do mount --bind "$i" "/mnt/$i"; done
  • mount /dev/sdaX /mnt/boot/efi/ # X is where our windows 10 boot efi partition installed
  • chroot /mnt
  • grub-install /dev/sda
  • update-grub
  • exit
  • for i in /sys /proc /run /dev; do unmount "/mnt/$i"; done
  • umount /mnt/boot/efi
  • umount /mnt
  • init 6
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