[continued from previous message]   
      
   recovery disk contains the "refined" content based on the "golden" one.   
   You can attempt to do certain repair commands, in-place on the golden   
   drive, and do everything on the one drive, but then imagine what   
   a "do-over" will entail, and what steps you will have to do over again!   
      
                 /--- No CRC errors on this disk! --\   
      
        old   ==>   "golden" (no longer degrading)   ==>   "refined output" disk   
   drive   
      
   1) ddrescue (gddrescue package)  copy bad drive to good drive.   
   2) chkdsk /b K:  on the good disk K: , to remove $BADCLUS   
   3) chkdsk /f K:  to correct $BITMAP on the good disk partition.   
   4) Somewhere between step 1 and step 4, do the maths to determine   
      which files got hit. Rather than me write up all sorts of nonsense,   
      there are already threads for the purpose.   
      
      https://superuser.com/questions/247419/how-to-quickly-get-a-l   
   st-of-files-that-have-bad-sectors-blocks-clusters-whate   
      
   5) Replace the files that got hit, and that you have worked out what   
      they are. Since you did not mention having a backup, you may not   
      have copies of all the files in your Documents folder. OS files   
      can be replaced after a fashion (DISM SFC).   
      
   General purpose NTFS recovery software, works on "Data" disks where   
   only user files are stored and no OSes are present. Dealing with   
   an OS drive is another matter, and some Windows stuff won't   
   respond to a Repair Install unless the OS partition is still bootable.   
   Recovery of such items is a lot harder to do -- it's not impossible,   
   but it requires gobs of stamina for repeated disk runs. This is one   
   of the reasons that gddrescue is the first step above, it puts your   
   goods on a "solid footing", so that any additional commands don't   
   need to be quite as aggressive (or as obscure).   
      
      Paul   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)