intel-microcode updates fail to install when running from live (read-only /boot) media

[virgosun]

I dont know
Ubuntu run from Live USB stick, create new user account

ProblemType: Package
DistroRelease: Ubuntu 16.04
Package: intel-microcode 3.20151106.1
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
AptOrdering:
 intel-microcode: Remove
 initramfs-tools: Configure
 NULL: ConfigurePending
Architecture: amd64
CasperVersion: 1.376
Date: Tue Aug 2 11:57:29 2016
ErrorMessage: subprocess installed post-removal script returned error exit status 1
LiveMediaBuild: Ubuntu-GNOME 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160720)
RelatedPackageVersions:
 dpkg 1.18.4ubuntu1.1
 apt 1.2.12~ubuntu16.04.1
SourcePackage: intel-microcode
Title: package intel-microcode 3.20151106.1 failed to install/upgrade: subprocess installed post-removal script returned error exit status 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Henrique de Moraes Holschuh (hmh)]

intel-microcode requires that a new initramfs is built upon install. Like anything else that would need to add new drivers to the initramfs, etc.

This requires special support on live media (i.e. the live media MUST have a rewriteable /boot partition which its bootloader will use, and must not have overlays there).

This is just a guess, but I'd say there is a good chance it is the issue you have...

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.