[Bug-ddrescue] No data rescued

[Jérôme Avoustin]

Hello

I've got a hard drive of 500 GB that I cannot read or even mount.
I used it on a Windows and a Mac, and I don't know what was the
partition type (but I think NTFS).
I tried ddrescue on that drive to recover data and copy it to another
500GB hardrive.
Both are connected using USB

It's been 3 days since I launched ddrescue and it seems that no data
has been recovered.

here's the command line I launched (after sudo -s) :
./ddrescue -r 1 --force /dev/sdb /dev/sdc ../rescued.log

Actually the process took 3 days trying to split blocks twice (1.5 day per try).
It has started to split a third time, and I interrupted it.
But I still have no data copied.
I have 1 error of 500GB size.

Here's both disks' description :
  *-disk
       description: SCSI Disk
       physical id: 0.0.0
       bus info: address@hidden:0.0.0
       logical name: /dev/sdb
       size: 465GiB (500GB)
  *-disk
       description: SCSI Disk
       physical id: 0.0.0
       bus info: address@hidden:0.0.0
       logical name: /dev/sdc
       size: 465GiB (500GB)
       capabilities: partitioned partitioned:dos
       configuration: signature=7c3a4a8f

Here's a copy of a few lines of the logfile :
# Rescue Logfile. Created by GNU ddrescue version 1.16
# Command line: ./ddrescue -r 1 --force /dev/sdb /dev/sdc ../rescued.log
# current_pos  current_status
0x6FFED9200     /
#      pos        size  status
0x00000000  0x00024400  -
0x00024400  0x0001BE00  /
0x00040200  0x00004400  -
0x00044600  0x0001C600  /
0x00060C00  0x00004000  -
0x00064C00  0x0001B800  /
0x00080400  0x00004400  -
0x00084800  0x0001C600  /
0x000A0E00  0x00024000  -
0x000C4E00  0x0001C400  /
0x000E1200  0x00004000  -
0x000E5200  0x0001B400  /

And other lines keep alternating between / and -

My question is simple : do I have a chance to recover some data from this disk ?
And subsidiary question : what can I do ? Do I have to resume ddrescue process ?

Thanks for your help

Jérôme