No. On Ubuntu raspi the VFAT partition is mounted on /boot/firmware, not
/boot. There is something wrong with your system setup.
ubuntu@rpi-4b-rev1d4-d9f5:~$ mount | grep mmc
/dev/mmcblk0p2 on / type ext4 (rw,relatime,discard,errors=remount-ro)
/dev/mmcblk0p1 on /boot/firmware type vfat
(rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro)
** Changed in: linux-raspi (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1944589
Title:
Ubuntu Mate 20.04 kernel updates 1042 and 1043 attempt to create
symlinks in /boot even though /boot on Raspberry Pi is vfat
Status in Ubuntu MATE:
New
Status in linux-raspi package in Ubuntu:
Invalid
Bug description:
The focal (20.04) kernel updates 1042 and 1043 attempt to create
symlinks in /boot. This was tested on a Pi 4 (arm64).
On Raspberry Pi, /boot is a vfat partition; vfat does not support
symlinks.
I think (but am not sure) that /boot on Raspberry Pi has to be vfat
(cannot be ext3/4 or another filesystem that supports symlinks)
This problem manifests itself as:
# apt-get upgrade
[...]
Setting up linux-image-5.4.0-1043-raspi (5.4.0-1043.47) ...
/etc/kernel-img.conf: W: ignoring no_symlinks; only symlinks are supported
Processing triggers for linux-image-5.4.0-1043-raspi (5.4.0-1043.47) ...
/etc/kernel/postinst.d/initramfs-tools:
update-initramfs: Generating /boot/initrd.img-5.4.0-1043-raspi
Using DTB: bcm2711-rpi-4-b.dtb
Installing
/lib/firmware/5.4.0-1043-raspi/device-tree/broadcom/bcm2711-rpi-4-b.dtb into
/boot/dtbs/5.4.0-1043-raspi/./bcm2711-rpi-4-b.dtb
Taking backup of bcm2711-rpi-4-b.dtb.
Installing new bcm2711-rpi-4-b.dtb.
ln: failed to create symbolic link '/boot/dtb-5.4.0-1043-raspi': Operation
not permitted
run-parts: /etc/initramfs/post-update.d//flash-kernel exited with return code
1
run-parts: /etc/kernel/postinst.d/initramfs-tools exited with return code 1
dpkg: error processing package linux-image-5.4.0-1043-raspi (--configure):
installed linux-image-5.4.0-1043-raspi package post-installation script
subprocess returned error exit status 1
Errors were encountered while processing:
linux-image-5.4.0-1043-raspi
E: Sub-process /usr/bin/dpkg returned an error code (1)
Even when /etc/kernel-img.conf is set to:
Kernel Image management overrides
See kernel-img.conf(5) for details
do_symlinks = no
no_symlinks = yes
do_bootloader = no
link_in_boot = no
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