- needs a real or VM linux desktop system with hard disk and card reader
- cannot handle NOOBS images
- consider also further remarks
download repository from GitHub,
unzip and copy for example to: ~/shrink
or
copy script to current directory
wget https://raw.github.com/qrti/shrink/master/script/shrink.sh
or
check if git is installed
$ git --version
if git is not installed
$ sudo apt-get install git-all
clone shrink repository to current directory
$ git clone https://github.com/qrti/shrink.git
$ sudo apt-get update && sudo apt-get install dcfldd
$ sudo apt-get update && sudo apt-get install gparted
before executing the script, insert your SD card
enter the following at the command line and find the name of your SD device, there should be two entries, for example /dev/sdd1 and /dev/sdd2
$ df -h
edit the script and enter your data between the quotation marks, for DEVICE omit the digit, so our example gets /dev/sdd, fill in your linux user name at USER
$ nano shrink.sh
DEVICE="" # source and target SD card device
USER="" # linux user name
explore the top of the script to configure some more things
change directory
$ cd ~/shrink
make script executable once
$ chmod 755 shrink.sh
execute script
$ sudo ./shrink.sh
use this script completely at your own risk
it needs a real or VM linux desktop system with hard disk and card reader
it cannot handle NOOBS images
do not shrink images to minimum, otherwise they won't start on your Raspberry, especially Raspbian Full Desktop images need some extra space, about >= 250 MB are advised, Raspbian Lite images might be more moderate
when using the new SD card for the first time, expand the filesystem to fill its space and reboot
by raspi-config
sudo raspi-config
Expand Filesystem
or
from command line
sudo raspi-config --expand-rootfs
sudo reboot
the script is 'half automatic', meaning at one point it will start GParted on desktop and guide you what to do
the script was developed and tested on a VirtualBox Windows host with Linux Mint guest
inspired by
http://www.aoakley.com/articles/2015-10-09-resizing-sd-images.php
Donations are welcome!
shrink is published under the terms of ISC license
Copyright (c) 2016 qrt@qland.de
Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED 'AS IS' AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.