For full disclosure, this is in a "cross" build environment (qemu-static). this works for other versions of ubuntu and has worked for xenial in the past.
the error messages seem to indicate 'update-initramfs' was deferred, but the the postinst tried to copy it into place even though it wasnt there. I am able to hack around this error by just touching the file /boot/initrd.img-4.3.0-7-generic before runnign the apt-get install. Setting up linux-image-4.3.0-7-generic (4.3.0-7.18) ... Running depmod. update-initramfs: deferring update (hook will be called later) /bin/cp: cannot stat '/boot/initrd.img-4.3.0-7-generic': No such file or directory Failed to copy /boot/initrd.img-4.3.0-7-generic to /boot/initrd.img at /var/lib/dpkg/info/linux-image-4.3.0-7-generic.postinst line 745. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1536810 Title: kernel install failed /bin/cp: cannot stat ‘/boot/initrd.img-4.3.0-7-generic’: No such file or directory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1536810/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs