[Ken Maltby]

You should not mess with the "unallocated space at the beginning of the SD card" it is critical system data space, leave it alone. Part of the reason that a clone image is made of the original disk, is to have the disk include the layout of the disk is an exact copy that includes that unallocated space at the beginning. The other partitions also need to remain in the order and remain named as they were on the original. It is only the last FAT partition that you want to extend to fill the added space of the new larger disk.

You should look at the second post in this thread. Under the Spoiler button there is a series of photos describing the process, the part describing this extension of the FAT partition is for an 8GB uSD as the new card.

Luck;
Ken

Your new 8GB disk should look like this in MiniTool Partition, before starting the "Extension" of the KOBOeReader partition.