Answer:
robocopy c:/source c:/destination /e /Z /FFT /R:n
here,
source : source folder name,
destination: destination folder name,
/e : command to copy all filesand folders from source to destination,
/Z : command to copy files in restart mode,
/FFT : command to use FAT file times,
/R:n : command to retry the copy in case of a failed attempt, by default n is 1 million times.