COWON S9 - Manual (Page 42)

42 COWON S9
+ Memory capacity of the player is different or smaller
than specified.
The memory capacity indicated by Windows may be different
from that indicated by the memory manufacturer. The actual
capacity will be reduced from the original size because some
space of the memory should be used as the system area for
normal operation.
+ COWON S9 does not play properly when memory is full.
For COWON S9 to function properly, it requires at least 5 MB of
space for saving settings and other system files.
+ For users with MAC OS(version 10.5 or above,
Leopard OS), note that it requires formatting the device
using MAC OS if the device malfunctions.
+ Troubleshooting