启动修复总是失败——未满足的依赖项 shim-signed

启动修复总是失败——未满足的依赖项 shim-signed

如果我没有提供完整的信息,请提前道歉——这是我第一次在这里发帖,我不确定协议是什么。

我在大学里管理的计算机实验室里运行 Windows 10 和 Ubuntu 16.04。我一直无法让计算机正确进行双启动,有时会导致 grub 菜单崩溃。这次我尝试从实时 USB 运行 Boot Repair,然后我到了要求我将以下内容输入终端的步骤:

sudo chroot "/mnt/boot-sav/sdb2" apt-get install -y grub-efi-amd64-signed shim-signed linux-headers-generic linux-signed-generic

但是,这会导致以下错误:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 shim-signed : Depends: shim (= 0.8-0ubuntu2) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

几乎每次我尝试使用 Boot Repair 时都会发生这种情况。因此,我一直在重新安装 Ubuntu。但是,我教职员工使用的软件需要大约 20 分钟才能重新安装,因此您可以想象这会是一个非常漫长的过程。

是否有人可以指导如何从这里继续并让 Boot Repair 正常工作?

先感谢您!

编辑:以下是 pastebin 链接:http://paste.ubuntu.com/p/w47GrNgFDP/

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