Re: Recover from unintended dd

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On Mon, 2016-11-21 at 07:26 -0500, fred roller wrote:
> On Mon, Nov 21, 2016 at 6:30 AM, Sam Varshavchik <mrsam@courier-mta.c
> om> wrote:
> > > Any help/clue to get the hard disk recovered is highly
> > > appreciated.
> > > 
> >  
> 
> For a full recovery you can research some advance software which
> *may* rebuild.  The names escape me atm but it does exists and you
> need to be comfortable with some advanced knowledge; or pay for a
> service.  The other solution is to install "testdisk" which has a
> program called "photorec" and let it grab what files it can.  Though
> designed to recover pics it will recover most coherent files it
> recognizes, which is quite a bit. The caveat is that it will have no
> structure and the filenames will be gone.  You will have file
> extensions to identify most but you will have the data to
> rebuild/rename by hand.  Question becomes: How important is the
> data?  Otherwise, as Sam pointed out, the disk is roached and re-
> partitioning/reformatting is in order with lessons learned.
> 
> -- Fred
_______________________________________________

Yeah, I went through this about 10 years ago.  Tools have 
changed since then, of course, but as I remember, I used 
testdisk and something called the "Trinity Rescue Kit."  I don't
 know if it's still around. I had mostly trashed images for a court
case I was working on.  I got about 70% of my data back, and it 
took me many hours of looking at files by hand.

There's also extundelete.  I don't know if it will work when 
the entire filesystem has been trashed, but it may be worth
a try. 

Lessons learned is right.  

rsync is your friend.  Now that storage has become so cheap, I always
maintain two backups of my data -- one I carry with me on a portable 
hard drive, and the other I keep locked up at home.


billo
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