I'm trying to rescue some data from an external hard drive for a friend of mine.
It's quite urgent because she's a professional graphic artist and the files are
needed for a current job. (She was unlucky because the drive containing the
originals died with a complete electrical/mechanical failure and the backup
drive, the one I now have, is inaccessible too.)
I've used ddrescue version 1.5 under Linux to copy the drive, 300Gb, to a 500Gb
external drive. That took over a week, with a substantial amount of errors. I
then tried to use the -r parameter to attempt to retrieve some of the missing
areas, but when I do so the process ends after about 15 minutes with
"Input/output error". Can you suggest why this might be, and what I should try
next.
Here is the output from a failed attempt using -r1:
--------------------------------
[EMAIL PROTECTED]:~$ ddrescue -v -r1 /dev/sda /dev/sdb LaCieBackup.log
About to copy 327857 MBytes from /dev/sda to /dev/sdb
Starting positions: infile = 0 B, outfile = 0 B
Copy block size: 128 hard blocks
Hard block size: 512 bytes
Max_retries: 1
Direct: no Split: yes Truncate: no
Press Ctrl-C to interrupt
Initial status (read from logfile)
rescued: 316308 MB, errsize: 11549 MB, errors: 22556805
Current status
rescued: 316308 MB, errsize: 11549 MB, current rate: 0 B/s
rescued: 316308 MB, errsize: 11549 MB, current rate: 0 B/ss
ipos: 202782 MB, errors: 22556781, average rate: 41 B/s
opos: 202782 MBr: Input/output error
--------------------------------
Note that in this case the error count went down, indicating that some data had
been retrieved. However, when I previously tried -r5 and -r2 there was no such
change.
Best wishes,
Chris
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