man pages for
ddrescue are here.
The command options tell
Force overwrite of block devices if you are not copying your data to a regular file. In this case the option will do nothing because you are making a copy to a regular
Retry any bad sectors 3 times
The path to the damaged drive you are trying to rescue. It should be connected but not mounted. Plug the drive in and run
lsblk to see the correct path.
Is just where you want to copy the rescued data to and can be any mounted drive with enough space for the copy. Don't use
/dev/ paths, just normal ones into your regular file system like
ddrescue will record it's progress so that if you stop it then it can resume from where it stopped and not have to start again. Again use normal path descriptions.
If the damaged drive is at
/dev/sdb1 then just open a terminal in the location you want to copy the data to and run
sudo ddrescue -r3 /dev/sdb1 rescue.img rescue.log
Once you have recovered your image then you will need to
mount it. There is some help here but if you have an
img file then you may find it easier to install
losetup to help with the
mount. You could also try specifying an
iso format instead of an
img and see if your file manager can open this directly (since @acg originally suggested the
Once mounted you can also use
testdisk to examine the iso for any deleted and lost files.