BASH script to shrink .iso images that contain Raspian SD card images (but not NOOBS since it has more than 2 partitions on the SD card).
Because Mac's aren't good at ext4 (and certainly not at writing ext4), this should be run on a Linux machine of some sort. I personally use the RPI Pixelx64 VM running under VMWware on my MBP. It's a ton faster than running it on an actual RPI3.
That VMimage can be found at: RPI.org Pixel-PC-Mac Link. Read that page, and find the download link there. It's fast on my MBP.
This utility takes one parameter, which is the name of a .iso disk image with a Raspian partition layout (#1=VFAT, #2=ext4). It resizes the #2 partition to a minimal size, so that the output .ISO is easier to copy and store.
Snarfed from a very nice (and smart) Kiwi at: Shrinking Raspberry Pi SD Card Images For Transfer/Storage
Modified on 2017-02-02 by Mike Petonic to:
- Add a buffer of about 200M because "resize2fs -M" is a bit toooo aggressive and booting from the SD card left you with very little (0) space. Can't even run bash...
- Modernized the commands to fdisk to reflect current Linux version of fdisk
- Prepended priveleged commands with sudo, because, well, lazy
This script is licensed under the WTFP License .
