I'm not sure about CF, but you have to be careful about file systems on
flash devices.

Because of the limited write endurance, many flash systems use a custom file
system, rather than a conventional FAT file system. These custom file
systems are designed to level out the wear on the flash.  A FAT file system
would quickly 'burn out' the part of the flash that holds the FAT, or any
other data that changed regularly.

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

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