I am trying to recover a 1.5TB WD Green hard disk with a single NTFS partition using ddrescue. So far its manage to rescue 1090GB of the drive but I have a few questions I hope someone is able to answer before I start mounting the imaged copy.
I have been using this command for the operation. The output drive is a 2TB Seagate Barracuda
ddrescue -d -f /dev/sdb /dev/sda /mnt/usb/rescue.logfile
While it has recovered 1090GB, the ipos and opos is showing 1114GB for both yet it has detected 0 errors with 0 errorsize. I noticed the transfer rate would be as low as a few b/s for some sections but some sections can reach up to 100MB/s. Has some data been missing since the recovered is less than the opos and ipos values?
Since the output is another drive, will it show up as a partition on the drive? Is it possible to set the drive to read only when its being read?
Will running another pass with -r3 or -R help in this case?
After the imaging is fully completed, is it advisable to use testdisk to try and fix any errors in the NTFS file structure?
Its been a couple of sleepless nights, so I would appreciate any feedback on this.
Thanks.