04-19-2008
Two is too little to be able to deduce which bits are correct -- you need more redundancy. Maybe you should have made three copies ...
If you have checksums or something then at least you could brute-force the bits you have to guess, but other than that (without knowledge of the Corel file format) it's pretty much trial and error.
Depends also on the type of error. My guess is your drive won't even let you read the sectors which are damaged, in which case you can use the noerror option of dd to continue reading. I guess it will leave zeros in those blocks, so then it should not be too hard to see if you get all the required pieces in either of the files.
Last edited by era; 04-19-2008 at 03:52 PM..
Reason: Afterthought: dd conv=noerror
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LEARN ABOUT DEBIAN
tsk_recover
TSK_RECOVER(1) General Commands Manual TSK_RECOVER(1)
NAME
tsk_recover - Export files from an image into a local directory
SYNOPSIS
tsk_recover [-vVae] [-i imgtype ] [-b dev_sector_size ] [-o sector_offset ] [-d dir_inum ] image output_dir
DESCRIPTION
tsk_recover recover files to the output_dir from the image. By default recovers only unallocated files. With flags, it will export all
files.
The arguments are as follows:
-v verbose output to stderr
-V Print version
-a Recover allocated files only
-e Recover all files (allocated and unallocated)
-i imgtype
The format of the image file (use '-i list' for supported types) If not given, autodetection methods are used.
-b dev_sector_size
The size (in bytes) of the device sectors If not given, autodetection methods are used.
-o sector_offset
Sector offset for a volume to recover (recovers only that volume) If not given, will attempt to recover all volumes in image and
save them to different folders.
-d dir_inum
Directory inum to recover from (must also specify a specific partition using -o or there must not be a volume system)
EXAMPLES
To recover only unallocated files from image.dd to the recovered directory:
# tsk_recover ./recovered ./image.dd
AUTHOR
Brian Carrier <carrier at sleuthkit dot org>
Send documentation updates to <doc-updates at sleuthkit dot org>
TSK_RECOVER(1)