This shell script creates a distributable image from a Raspberry Pi SD card.
NOTE: This script has not been used for imaging irreplaceable data. While this script should not be destructive, it modifies the filesystem and partition table.
It can be run like this:
bash mkimg.sh /dev/sda sdcard.img.zip
Under the hood the script performs the following operations:
- ensures the first partition is
fat16
and the second partitionext4
- fixes any errors on the filesystem
- shrinks the Linux filesystem to its smallest size
- shrinks the Linux partition to the size of the filesystem + small buffer
- creates a compressed image from the given device
- expands the partition and filesystem back to their largest sizes
Replace <device>
with the location of your SD card; e.g. /dev/sda
:
unzip -p sdcard.img.zip | sudo dd bs=1M of=<device>
Replace <device>
with the location of your SD card; e.g. /dev/rdisk1
:
unzip -p sdcard.img.zip | sudo dd bs=1m of=<device>