(in Sd Card) can i copy the entire file and rename it ?

When I tried to compile,I got this error:

_0_0_0_sd-sd.ino: In function 'void setup()':
_0_0_0_sd-sd:41: error: incompatible types in assignment of 'int' to 'byte [3000] {aka unsigned char [3000]}'
incompatible types in assignment of 'int' to 'byte [3000] {aka unsigned char [3000]}'

??