Originally Posted by davidfor
I don't know if it can be done without removing the card. I suspect the device presents the partition to the PC in a way that prevents this.
I've done this (fixed a 4GB partitioned as 2) for a friend. Can't say if it works without removing, just assumed the card would have to be out of a running Kobo to adjust the partition.
But removed, using iPartition
(Mac) for the resize, it worked.
The same technique upgraded my Glo to 16G internal.