Error:
grub-installer: Installing for x86_64-efi platform. kernel: [ 986.571266] FAT-fs (sda2): error, corrupted directory (invalid entries) grub-installer: grub-install: error: cannot open `/boot/efi/EFI/ubuntu/shimx64.efi': Input/output error. kernel: [ 995.537581] FAT-fs (sda2): error, corrupted directory (invalid entries) grub-installer: error: Running 'grub-install --force "/dev/sda"' failed.
Error:
grub-installer: Installing for x86_64-efi platform. efi/EFI/ ubuntu/ shimx64. efi': Input/output error.
kernel: [ 986.571266] FAT-fs (sda2): error, corrupted directory (invalid entries)
grub-installer: grub-install: error: cannot open `/boot/
kernel: [ 995.537581] FAT-fs (sda2): error, corrupted directory (invalid entries)
grub-installer: error: Running 'grub-install --force "/dev/sda"' failed.