Pass 0, 0/10 headers found, Error reading sector

Using PhotoRec to recover lost data
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landroni
Posts: 10
Joined: 19 Apr 2012, 15:21

Pass 0, 0/10 headers found, Error reading sector

#1 Post by landroni » 27 Jan 2014, 12:12

I'm in the middle of a photorec recovery session (16h and counting) from a damaged hard-disk and 'Pass 0' hasn't finished yet.

Code: Select all

PhotoRec 6.13, Data Recovery Utility, November 2011
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org

Disk /dev/sdb - 250 GB / 232 GiB (RO) - ASMT 2105
     Partition                  Start        End    Size in sectors
   P Unknown                  0   0  1 238475  11 16  488397168


Pass 0 - Reading sector   12232389/488397168, 0/10 headers found
Elapsed time 16h04m54s - Estimated time to completion 626h00m14
Error reading sector   12232389
As you can see from the above, after failing to read 12m sectors (out of 488m), photorec fails to complete 'Pass 0'. Should I get worried? Is there anything that I can do improve the speed?
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landroni
Posts: 10
Joined: 19 Apr 2012, 15:21

Re: Pass 0, 0/10 headers found, Error reading sector

#2 Post by landroni » 27 Jan 2014, 14:50

OK, I got worried so I stopped 'Pass 0' (still at 0/10 headers found):

Code: Select all

PhotoRec 6.13, Data Recovery Utility, November 2011
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org

Disk /dev/sdb - 250 GB / 232 GiB (RO) - ASMT 2105
     Partition                  Start        End    Size in sectors
   P Unknown                  0   0  1 238475  11 16  488397168


Pass 0 - Reading sector   14201304/488397168, 0/10 headers found
Elapsed time 18h40m12s - Estimated time to completion 623h24m36
Error reading sector   14201304
And then suspended 'Pass 1':

Code: Select all

PhotoRec 6.13, Data Recovery Utility, November 2011
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org

Disk /dev/sdb - 250 GB / 232 GiB (RO) - ASMT 2105
     Partition                  Start        End    Size in sectors
   P Unknown                  0   0  1 238475  11 16  488397168


Pass 1 - Reading sector       8192/488397168, 0 files found
Elapsed time 18h41m11s - Estimated time to completion 1114041h18m02
Error reading sector       8192
Two questions:
  • Is it OK to continue with 'Pass 1' if I stopped 'Pass 0'?
  • How can I use 'expert mode' to properly force the file system block size and the offset for an HFS+ partition?
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