>> Filesystem Size Used Avail Use% Mounted on >> rootfs 323M 189M 117M 62% / > This is the problem. The root filesystem is too small, so you will not > be able to install or upgrade a Debian kernel. This is a bug[1] in the > automatic partitioner that only got fixed in Jessie. > There's no easy way out here, my choice would probably be to make a > backup and repartition the disk.
Can't he just create a suitably sized /boot partition to relieve the / partition of badly needed space for the /lib/modules subdirectory? Stefan