apt一周左右的时间里，我在更新或运行任何命令时遇到错误。升级到 LTS 18.04 并没有解决它，也没有删除所有旧内核。空间也不是问题。
尝试重新安装initramfs不起作用。我得到的错误是：
Reading package lists...
Building dependency tree...
Reading state information...
0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.
2 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up linux-image-4.15.0-47-generic (4.15.0-47.50) ...
Setting up initramfs-tools (0.130ubuntu3.7) ...
update-initramfs: deferring update (trigger activated)
Processing triggers for linux-image-4.15.0-47-generic (4.15.0-47.50) ...
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-4.15.0-47-generic
E: /usr/share/initramfs-tools/hooks/fsck failed with return …