with my latest upgrade to Ubuntu 13.04, the initrd.img-3.8.0-21-generic file is now 32M. This is creating me problem with upgrading to newer kernels as I have /boot partition of just 96MB. What can I do to reduce the size of this file?
Additionally you can choose a better compression algorithm, the default should still be gzip, but xz (or lzma2) is also available via
After setting this, run