Hi, I'm using Ubuntu 21. My /boot partition size is 500M and it's getting full:
/dev/sda1 446M 352M 61M 86% /boot What's taking space are mainly these: -rw-r--r-- 1 root root 153M heinä 10 14:22 initrd.img-5.11.0-22-generic -rw-r--r-- 1 root root 151M heinä 23 13:13 initrd.img-5.11.0-25-generic apt-get upgrade fails: update-initramfs: Generating /boot/initrd.img-5.11.0-25-generic Error 24 : Write error : cannot write compressed block E: mkinitramfs failure cpio 141 lz4 -9 -l 24 update-initramfs: failed for /boot/initrd.img-5.11.0-25-generic with 1. dpkg: error processing package initramfs-tools (--configure): installed initramfs-tools package post-installation script subprocess returned error exit status 1 Errors were encountered while processing: initramfs-tools E: Sub-process /usr/bin/dpkg returned an error code (1) Resizing the partitions is very complicated because I'm using an encrypted partition ( https://help.ubuntu.com/community/ResizeEncryptedPartitions ). So that's really not an option for me. How to fix this: I suggest that apt-get/dpkg handles upgrading outside /boot. Two kernels seem to fit there if the updating is done cleverly. Or if only one kernel fits, then keep only on kernel in /boot. Thanks, Ilkka