When recovering data from optical drives or hard drives, I am always
partial to dd. You will want to use these options to skip the bad
blocks, and pad the empty space with zeros.
dd conv=noerror,sync if=(name of drive) of=(name of output)
Ben Straton
Seattle Tech Experts llc.
Sent from my iPhone
On Apr 12, 2010, at 12:00 PM, linux-list-
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Today's Topics:
1. Recovering Data from Bad Blocks on DVD (Tim Maher)
----------------------------------------------------------------------
Message: 1
Date: Mon, 12 Apr 2010 11:37:02 -0700
From: Tim Maher <[email protected]>
Subject: [SLL] Recovering Data from Bad Blocks on DVD
To: [email protected]
Message-ID: <[email protected]>
Content-Type: text/plain; charset=us-ascii
Help!
I backed up some large, important video files to a DVD a while back,
but discovered today that some of them are now generating CRC errors.
I'd like to copy the files to a writable medium (i.e., hard disk), so
I can try to minimize the (audio/video) impact of the lost data, but
my attempts to copy the files fail when they hit the first CRC error.
There are definitely some rather obvious scratches on the disc, which
I had hoped polishing with commercial products would remove, but I
still get CRC errors after trying that.
I suppose I could grab the good blocks of each file off the DVD using
"dd" commands, but that might prove to be a tedious task, and in any
case, I'd rather rescue the (currently unreadable, but possibly still
there) real data instead.
Can anybody recommend:
A) better disc repairing products, such as ones I've heard of that
actually fill-in the scratches?
B) software utilities that can copy (as much data as possible from)
files that have CRC errors?
TIA,
Tim
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