How to FIX BUG – disk filter writes are not supported Ubuntu (Server)14.04

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If you don’t want to wait for this patch to be applied by the Ubuntu/Debian guys in the official code, you can use this patched 00_header:
Step 1 – Download patch

root@mail:/# wget https://gist.githubusercontent.com/rarylson/da6b77ad6edde25529b2/raw/99f266a10e663e1829efc25eca6eddb9412c6fdc/00_header_patched

Step 2 – Apply patch

root@mail:/# mv /etc/grub.d/00_header /etc/grub.d/00_header.orig root@mail:/# mv 00_header_patched /etc/grub.d/00_header

Step 3 – Disable the old script and enable the new one

root@mail:/# chmod -x /etc/grub.d/00_header.orig root@mail:/# chmod +x /etc/grub.d/00_header

Step 4 – Update Grub

root@mail:/# update-grub

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