Samyung NAVIS 5100 Instruction Manual page 45

 SD card erase
(It is available for only the model with SD slide)
)  [1.DATA]
(
)  [SD CARD]
(
Select "YES"
(
)  [2.MARK DATA]
(
)  Select the file you want to erase
(
)
45
)  [6.ERASE]
(
) 
(