Re-partitioning; Adding swap partition; Using GPT partitions

[ab1jx]

FAT is a wonderfully simple system.  And simple also means reliable, easy for lesser processes to figure out.  I once read most of the Peter Norton Programmer's Bible from cover to cover and the boot sector, root directory, FAT, locations of files are easy to see.  The boot sector (if I remember right) specifies where the root directory begins.  Directories are just files really that link the file name to the starting disk sector number.  You look up that sector number in the FAT and read the next sector number until you hit an EOF marker.  Bad sectors can be marked as such in the FAT and ignored.  There can only be 512 files/directories  in the root.

I don't like GPT after a bad experience trying to increase the size of a partition table with Gparted, had to reload the SD card from an image.  I just wanted to clone a 64 GB onto a blank 128 GB and expand the partition.