Continuing DDRESCUE; was destination *OVERWRITTEN* on 2nd stage?

[Arwen]

I ran this for a few days (dropped laptop, crashed hard drive):

sudo ddrescue -f -n /dev/sda /dev/sdc /home/Brian/desktop/rescue.log

I was running it overnight, as I needed my computer during the day. (I was swapping in the crashed hard drive at night, booting from a Live USB, and copying to a brand new drive plugged into a USB port.) The recovery had slowed to a crawl. I don't need everything, so I moved to the next phase:

ddrescue -f -r3 /dev/sda /dev/sdc /home/Brian/desktop/rescue.log

I got this message at startup:

Initial status (read from logfile)
Rescued 65620 MB , errsize 525 MB, errors 16515

Current status
Rescued 66387 ... (After 1 hour)

I was at around 435 GB before (of 500 possible) !!!
Did starting the second phase overwrite what was on my new drive???? Where did they get that "initial" 65620 MB number ???

Thanks for you help.

 

[Jared]

It would have pulled that from the log file which is how it keeps track of what sector chains have and haven't been recovered. Are you sure it was really at 435Gb recovered before?

In any event it wouldn't have overwritten anything on the destination. It just might be trying to re-rescue sectors that have already been read and copy them again to the destination.