I am currently running version 15.10 of Ubuntu, and today system requested an upgrade to 16.04. I ran the upgrade but it stopped mid-way due to low disk space error. I cleaned up old kernels, leaving just the one I am currently running, but it still didn't make up enough space for the upgrade. Here is my current kernel list:

ii  linux-image-4.2.0-42-generic       4.2.0-42.49  amd64        Linux kernel image for version 4.2.0 on 64 bit x86 SMP
ii  linux-image-extra-4.2.0-42-generic 4.2.0-42.49  amd64        Linux kernel extra modules for version 4.2.0 on 64 bit x86 SMP
ii  linux-image-generic        amd64        Generic Linux kernel image

ii  linux-headers-4.2.0-42         4.2.0-42.49  all          Header files related to Linux kernel version 4.2.0
ii  linux-headers-4.2.0-42-generic 4.2.0-42.49  amd64        Linux kernel headers for version 4.2.0 on 64 bit x86 SMP
ii  linux-headers-generic  amd64        Generic Linux kernel headers

and here is the df -h result:

Filesystem      Size  Used Avail Use% Mounted on
udev            1,9G     0  1,9G   0% /dev
tmpfs           388M  6,5M  381M   2% /run
/dev/dm-1       454G   15G  416G   4% /
tmpfs           1,9G  160K  1,9G   1% /dev/shm
tmpfs           5,0M  4,0K  5,0M   1% /run/lock
tmpfs           1,9G     0  1,9G   0% /sys/fs/cgroup
/dev/sda2       237M  119M  106M  53% /boot
/dev/sda1       511M  3,4M  508M   1% /boot/efi
tmpfs           388M   48K  388M   1% /run/user/1000

This is the error message (after the old kernel clean-up):

Not enough free disk space 

The upgrade has aborted. The upgrade needs a total of 183 M free 
space on disk '/boot'. Please free at least an additional 72,6 M of 
disk space on '/boot'. Empty your trash and remove temporary packages 
of former installations using 'sudo apt-get clean'. 

I have tried sudo apt-get clean and my trash is empty. Is there anything else I can do to free more space in /boot?

  • Why is /boot mounted on a different partition? – anonymous2 Aug 18 '16 at 13:23
  • I cannot answer that, I was not the one who installed the OS. Is there a way to switch it to /dev/sda1 while avoiding a clean reinstall? – DonSpark Aug 18 '16 at 13:27
  • Hmm, possibly, but it could be pretty tricky. Probably better to grow the partition, as @KratsYnot suggested. – anonymous2 Aug 18 '16 at 13:33
  • Check out askubuntu.com/questions/280211/… – anonymous2 Aug 18 '16 at 13:33

Perhaps resize the partition?

This suggests apt-get autoremove, if you have not tried that

  • Thanks a bunch, I haven't thought as far as resizing the partition. I will try that, cheers! – DonSpark Aug 18 '16 at 13:40

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