I install ubuntu 18.04.2 LTS and i can not access my hard driver and when i use apt update and upgrade there erro grub-efi-amd64-signed and sub-process /usr/bin/dpkg returend an erro code(1)

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put on hold as unclear what you're asking by Android Dev, guntbert, karel, Eliah Kagan, Kulfy 2 days ago

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    What do you mean by "I cannot access my hard drive"? You provided no details about that issue. Regarding apt update error, could you provide whole output of the command, not just error code? Please edit your original question and put output there. – marosg Jun 13 at 4:43

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