Yes, focal initrd is a little larger than bionic one.
$ ls -lh /boot/initrd.img-5.4.0-42-generic
-rw-r--r-- 1 root root 81M Jul 22 06:35 /boot/initrd.img-5.4.0-42-generic
$ ls -lh bm-ubuntu-bionic.initrd
-rw-r--r-- 1 root root 52M Aug 10 03:49 bm-ubuntu-bionic.initrd
But not sure if it is related to size. I have tried a more larger initrd which works too.
$ ls -lh ipa-ubuntu-bionic.initramfs
-rw-rw-r-- 1 stack stack 470M Jul 27 10:00 ipa-ubuntu-bionic.initramfs
Yes, focal initrd is a little larger than bionic one. img-5.4. 0-42-generic img-5.4. 0-42-generic bionic. initrd bionic. initrd
$ ls -lh /boot/initrd.
-rw-r--r-- 1 root root 81M Jul 22 06:35 /boot/initrd.
$ ls -lh bm-ubuntu-
-rw-r--r-- 1 root root 52M Aug 10 03:49 bm-ubuntu-
But not sure if it is related to size. I have tried a more larger initrd which works too. bionic. initramfs bionic. initramfs
$ ls -lh ipa-ubuntu-
-rw-rw-r-- 1 stack stack 470M Jul 27 10:00 ipa-ubuntu-