Unpacking linux-image-4.4.0-22-generic (4.4.0-22.40) over (4.4.0-22.39) ...
dpkg: error processing archive /var/cache/apt/archives/linux-image-4.4.0-22-generic_4.4.0-22.40_amd64.deb (--unpack):
unable to make backup link of './boot/System.map-4.4.0-22-generic' before installing new version: Operation not permitted
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Examining /etc/kernel/postrm.d .
run-parts: executing /etc/kernel/postrm.d/initramfs-tools 4.4.0-22-generic /boot/vmlinuz-4.4.0-22-generic
Errors were encountered while processing:
/var/cache/apt/archives/linux-image-4.4.0-22-generic_4.4.0-22.40_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)
Ubuntu 16.04
Unpacking linux-image- 4.4.0-22- generic (4.4.0-22.40) over (4.4.0-22.39) ... apt/archives/ linux-image- 4.4.0-22- generic_ 4.4.0-22. 40_amd64. deb (--unpack): System. map-4.4. 0-22-generic' before installing new version: Operation not permitted postrm. d . postrm. d/initramfs- tools 4.4.0-22-generic /boot/vmlinuz- 4.4.0-22- generic apt/archives/ linux-image- 4.4.0-22- generic_ 4.4.0-22. 40_amd64. deb
dpkg: error processing archive /var/cache/
unable to make backup link of './boot/
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Examining /etc/kernel/
run-parts: executing /etc/kernel/
Errors were encountered while processing:
/var/cache/
E: Sub-process /usr/bin/dpkg returned an error code (1)