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I got the following error message from Software Updater:

The upgrade needs a total of 74,6 M free space on disk '/boot'. Please free at least an additional 68,3 M of disk space on '/boot'. Empty your trash and remove temporary packages of former installations using 'sudo apt-get clean'.

How can I get more disc space? I have

df -h
Filesystem                    Size  Used Avail Use% Mounted on
/dev/mapper/xubuntu--vg-root  454G   13G  418G   3% /
none                          4,0K     0  4,0K   0% /sys/fs/cgroup
udev                          1,9G  4,0K  1,9G   1% /dev
tmpfs                         384M  1,3M  383M   1% /run
none                          5,0M     0  5,0M   0% /run/lock
none                          1,9G   24M  1,9G   2% /run/shm
none                          100M   36K  100M   1% /run/user
/dev/sda2                     237M  219M  6,1M  98% /boot
/dev/sda1                     511M  3,4M  508M   1% /boot/efi
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marked as duplicate by muru, Eric Carvalho, Mitch Dec 15 '14 at 8:38

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

The suggestions in the notice are not enough? – Rinzwind Jul 10 '14 at 8:18
well /boot is almost full, 98%, which means you have almost no disk space. Did you even read the message? – Alvar Jul 10 '14 at 8:25
@Alvar I read but somehow I thought it is enough to empty the trash on the desktop. Well, by emptying the boot directory helped. – user2219896 Jul 10 '14 at 8:28
run the command suggested sudo apt-get clean and delete old kernels. Make sure you keep the one you are using and I suggest you keep the previous one but delete all others as described here – Warren Hill Jul 10 '14 at 8:47
You have a seperate partition for /boot, so it only has a certain ammount of space (273MB). Everytime there is a new kernel, and you update to it it creates a file in /boot, over time and by not removing old kernels this will fill up. run "sudo apt-get autoremove" then "sudo apt-get autoclean" and it will probably be okay. – robblue2x Jul 10 '14 at 9:14
up vote 4 down vote accepted

I experienced this same message with Ubuntu 14.04. The answer to this question took care of the problem by removing old Linux kernels from /boot. It freed almost a half gig of space there.

Here's the link: How do I remove or hide old kernel versions to clean up the boot menu?

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