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How to clear room in /boot on Rsapberry Pi 4 running Ubuntu Server 20.04

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Scott Deagan

I have a Raspberry Pi 4 running Ubuntu Server 20.04 with:

root@pi4-4gb:/# du -sh /boot
246M    /boot
root@pi4-4gb:/# ll /boot/
total 126035
drwxr-xr-x  4 root root     4096 Aug 20 21:49 ./
drwxr-xr-x 20 root root     4096 Aug 20 21:43 ../
-rw-r--r--  1 root root   220324 Jul 10  2020 config-5.4.0-1015-raspi
-rw-r--r--  1 root root   219341 Jul 15 01:56 config-5.4.0-1041-raspi
-rw-r--r--  1 root root   219341 Jul 29 17:30 config-5.4.0-1042-raspi
lrwxrwxrwx  1 root root       43 Aug 20 21:49 dtb -> dtbs/5.4.0-1042-raspi/./bcm2711-rpi-4-b.dtb
lrwxrwxrwx  1 root root       43 Aug 20 21:11 dtb-5.4.0-1015-raspi -> dtbs/5.4.0-1015-raspi/./bcm2711-rpi-4-b.dtb
lrwxrwxrwx  1 root root       43 Aug 20 21:10 dtb-5.4.0-1041-raspi -> dtbs/5.4.0-1041-raspi/./bcm2711-rpi-4-b.dtb
lrwxrwxrwx  1 root root       43 Aug 20 21:49 dtb-5.4.0-1042-raspi -> dtbs/5.4.0-1042-raspi/./bcm2711-rpi-4-b.dtb
drwxr-xr-x 21 root root     4096 Aug 19 06:05 dtbs/
drwxr-xr-x  3 root root    10752 Jan  1  1970 firmware/
lrwxrwxrwx  1 root root       27 Aug 19 06:04 initrd.img -> initrd.img-5.4.0-1042-raspi
-rw-r--r--  1 root root 29950118 Aug 20 21:11 initrd.img-5.4.0-1015-raspi
-rw-r--r--  1 root root 30355964 Aug 20 21:10 initrd.img-5.4.0-1041-raspi
-rw-r--r--  1 root root 30359495 Aug 20 21:39 initrd.img-5.4.0-1042-raspi
lrwxrwxrwx  1 root root       27 Aug 19 06:04 initrd.img.old -> initrd.img-5.4.0-1041-raspi
-rw-------  1 root root  4160456 Jul 10  2020 System.map-5.4.0-1015-raspi
-rw-------  1 root root  4167408 Jul 15 01:56 System.map-5.4.0-1041-raspi
-rw-------  1 root root  4167480 Jul 29 17:30 System.map-5.4.0-1042-raspi
lrwxrwxrwx  1 root root       24 Aug 19 06:04 vmlinuz -> vmlinuz-5.4.0-1042-raspi
-rw-------  1 root root  8390521 Jul 10  2020 vmlinuz-5.4.0-1015-raspi
-rw-------  1 root root  8401730 Jul 15 01:56 vmlinuz-5.4.0-1041-raspi
-rw-------  1 root root  8400065 Jul 29 17:30 vmlinuz-5.4.0-1042-raspi
lrwxrwxrwx  1 root root       24 Aug 19 06:04 vmlinuz.old -> vmlinuz-5.4.0-1041-raspi
root@pi4-4gb:/# uname -r
5.4.0-1015-raspi

Every now and then when I run updates, I get errors. I think this is happening because by /boot directory runs out of space.

I'm not sure why I'm still on kernel 5.4.0-1015-raspi, have ask this in another question.

How can I clear space in by /boot directory?

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user535733 avatar
cn flag
user535733
Under most circumstances, your Ubuntu system will clearly tell you if lack of space in /boot is the problem. To begin using a different (newer), simply reboot. If the reboot does not get you to a newer kernel, then reboot again and select the newer kernel at GRUB.
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