I am trying to update all of the software on my model b pi.

I have cleared as much space as possible - then did df -h

Filesystem      Size  Used Avail Use% Mounted on
/dev/root       6.0G  5.2G  450M  93% /
devtmpfs        427M     0  427M   0% /dev
tmpfs           432M     0  432M   0% /dev/shm
tmpfs           432M   12M  420M   3% /run
tmpfs           5.0M  4.0K  5.0M   1% /run/lock
tmpfs           432M     0  432M   0% /sys/fs/cgroup
/dev/mmcblk0p6   63M   20M   43M  32% /boot
tmpfs            87M     0   87M   0% /run/user/1000
/dev/mmcblk0p5   30M  398K   28M   2% /media/pi/SETTINGS2

The sudo apt full-upgrade command told me it needed this much space:

After this operation, 223 MB of additional disk space will be used.

But the unpacking process failed with:

Unpacking libreoffice-calc (1:4.3.3-2+rpi4) over (1:4.3.3-2+rpi3) ...
Preparing to unpack .../libreoffice-core_1%3a4.3.3-2+rpi4_armhf.deb ...
Unpacking libreoffice-core (1:4.3.3-2+rpi4) over (1:4.3.3-2+rpi3) ...
dpkg:../../src/unpack.c:123:deb_reassemble: internal error: unexpected exit status 11 from dpkg-split
E: Sub-process /usr/bin/dpkg exited unexpectedly

Or should I change OS to stretch (does that work on model b? I have no legacy software on my pi - clean start would not be a hardship. Very grateful for any ideas.

  • I've successfully updated wheezy => jessie, and jessie => stretch and stretch => buster over the years on my original piB - so, upgrading by ONE version definitely works ... however, I manually prepared things like a bigger boot partition (256MB) before doing so - this doesn't address your issue though, I think the fact that you have so little space is going to be an issue .... also, it's clear your original install was NOOBS - and NOOBS is poorly named, since you need to be anything but a NOOB to fix the issues it invariably causes Commented Jun 21, 2020 at 9:40
  • If you are going to do a re-install, it would probably be worthwhile to splurge on a 16GB (!!) card.
    – goldilocks
    Commented Jun 21, 2020 at 13:50

2 Answers 2


You wrote

clean start would not be a hardship.

So I strongly recommend to do it. There are some important reasons to do it, because it isn't worth the effort to fix your installation:

  1. Jessie is deprecated since years and out of any support since 2020-01-01. Its repository is archived.
  2. Seems you have installed NOOBS but only using Raspbian. NOOBS is a waste of storage. As far as I know it needs more than 1 GB of space. Most of us does not use it because it is also error prone.
  3. Just install the Raspberry Pi OS version Buster direct from its image. This will save storage. And yes, it will also run on your RPi 2B.

You seem to be running NOOBS (one of the Foundation's worst ideas).

This is NOT upgradable - even a "fresh install" will fail.

Even if you had directly installed Raspbian, the Foundation advice is to do a fresh install of Buster. (It is possible for expert users to upgrade but this actually takes longer than a fresh install. Skipping versions just makes this more difficult.)

Install Raspberry Pi OS using one of the recommended methods

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