Flash Umbrel OS

Download and flash Umbrel OS on the micro SD

Download

Download Page ⇒ https://github.com/getumbrel/umbrel/releases

Download either umbrelos-pi4.img.zip or umbrelos-pi5.img.zip depending on your pi model.

Once it's downloaded, unzip it and find the .img file.

Flash

Connect the micro SD to your computer via the adapter. Next, find your micro SD block device name:

lsblk -o NAME,FSTYPE,FSSIZE,FSAVAIL,MOUNTPOINT

We assume it's /dev/sda for this tutorial but make sure to replace by yours.

If the micro SD was automatically mounted, ensure you unmount it along with any potentially mounted partitions. For example:

sudo umount /dev/sda1
sudo umount /dev/sda2
sudo umount /dev/sda

Now we can flash the .img into the micro SD:

sudo dd if=/home/alex/Downloads/umbrelos-pi4.img of=/dev/sda bs=1M status=progress

Wait for the prompt to return, this can take a while. Once finished you can safely eject the micro SD.

Windows & MacOS users can use Etcher instead and follow this tutorial.