Comment 3 for bug 1565578

Was seeing `hfsplus: Filesystem was not cleanly unmounted, running fsck.hfsplus is recommended. mounting read-only.` in dmesg so i unmounted /boot/efi and ran fsck on it. Remounted it rw. Now getting a new error:

Setting up shim-signed (1.12+0.8-0ubuntu2) ...
Installing for x86_64-efi platform.
grub-install: error: Can't create file: No such file or directory.
dpkg: error processing package shim-signed (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 shim-signed
E: Sub-process /usr/bin/dpkg returned an error code (1)