Comment 2 for bug 2017182

The issue I experienced here, with ~0 bytes free on /boot, produces a more clear "no space left" error than other initramfs-tools post-installation bugs.

See Df.txt;
/dev/sda1 238924 232193 0 100% /boot

See end of DpkgTerminalLog.txt;
update-initramfs: Generating /boot/initrd.img-5.4.0-147-generic
cat: write error: No space left on device
update-initramfs: failed for /boot/initrd.img-5.4.0-147-generic with 1.
dpkg: error processing package initramfs-tools (--configure):
 installed initramfs-tools package post-installation script subprocess returned error exit status 1