I hav a 500GB hard disk(SEAGATE). Its divided into 40GB, 250GB and 200GB. Recently, my hard disk was not getting detected. After i pulled out and reinserted the data cable it got detected. Now, the Hard Disk is not at all getting detected. I have another 500GB Hard Disk(2 different systems). When I connect the first HDD, i can hear noises from it. Recently, I connected it after turning on the system having UBUNTU as the OS. The 200GB partition was detected and was mounted. But, the 250GB partition could not be mounted and i got the error saying cannot mount the drive. I need those files.
Ddrescue can perform multipass cloning. It clones the easy sectors on the first pass, and attempts the more difficult ones on subsequent passes. It can also clone your drive in reverse, thereby disabling lookahead caching. It keeps a log, allowing it to resume after an interruption.