Prepare SD card using GNOME Disks

Procedure

1. Start with an empty (unpartitioned, unformatted) SD card. If you disk is not empty, you will need to do a search on how to clean the disk and create an msdos disklabel (aka partition table).

   

2. Add boot partition

3. Format as VFAT (part of partition-creation wizard)

4. Result is a partition formatted as FAT 16

5. Make the partition bootable

6. We want FAT 32 so use terminal to reformat as FAT 32

7. Resulting FAT 32 formatted boot partition

8. Mount the boot partition for next steps