My external Hard disk is unallocated and not initialized. I tried to initialized it but failed, it said data error cyclic redundancy check. i tried to scan my drive using WD Drive Utilitied, but failed in both quick drive test and complete drive test. Please Help
Sounds like exFAT file system and not safe ejecting the drive.
If so, look here https://www.minitool.com/data-recovery/data-error-crc.html