建议的修复方法无效 附上屏幕截图。感谢您的快速回复。
patwines@patwines-Lenovo-G700:~$ sudo apt-get install --reinstall grub-pc-bin
[sudo] password for patwines:
Reading package lists... Done
Building dependency tree
Reading state information... Done
0 to upgrade, 0 to newly install, 1 to reinstall, 0 to remove and 0 not to upgrade.
2 not fully installed or removed.
Need to get 0 B/888 kB of archives.
After this operation, 0 B of additional disk space will be used.
(Reading database ... 271725 files and directories currently installed.)
Preparing to unpack .../grub-pc-bin_2.02~beta2-36ubuntu3.15_amd64.deb ...
Unpacking grub-pc-bin (2.02~beta2-36ubuntu3.15) over (2.02~beta2-36ubuntu3.15) ...
Setting up grub-efi-amd64-signed (1.66.15+2.02~beta2-36ubuntu3.15) ...
Installing for i386-pc platform.
grub-install: error: install device is not specified.
dpkg: error processing package grub-efi-amd64-signed (--configure):
subprocess installed post-installation script returned error exit status 1
Setting up shim-signed (1.32~16.04.1+0.9+1474479173.6c180c6-1ubuntu1) ...
Installing for x86_64-efi platform.
grub-install: error: cannot find EFI directory.
dpkg: error processing package shim-signed (--configure):
subprocess installed post-installation script returned error exit status 1
Setting up grub-pc-bin (2.02~beta2-36ubuntu3.15) ...
Errors were encountered while processing:
grub-efi-amd64-signed
shim-signed
E: Sub-process /usr/bin/dpkg returned an error code (1)
patwines@patwines-Lenovo-G700:~$