Hi Ridz. Maybe try not specifying cluster size?
You can interrupt the current run since you have a log file. Try running: ./ddrescue --v /dev/sdc /media/sde1/rescue.img /media/sde1/rescue.log Maybe using synchronous or direct may help (-vDd or -vd or -vD). Beyond that, maybe it's a hardware issue. How are the source and destination drive attached to the computer? Andrew --- On Sun, 1/9/11, [email protected] <[email protected]> wrote: From: [email protected] <[email protected]> Subject: Re: [Bug-ddrescue] Need help - ddrescue very slow - avg 27kb/s To: [email protected], [email protected] Received: Sunday, January 9, 2011, 5:16 PM Hi Andrew, Thanks for replying. I was initially recovering to an NTFS filesystem. The average rate never went higher than 27kb. I've read that writing a large file to NTFS filesystem can get progressively slower. Therefore, I formated my recovery harddisk to ext3. However, there was no improvement - the average rate is still 27kb and the current rate never go beyond 30kb. For the recovery harddisk, I had formatted it following the instructions at http://www.idevelopment.info/data/Unix/Linux/LINUX_PartitioningandFormattingSecondHardDrive_ext3.shtml Result of mount of the recovery harddisk: /dev/sde1 on /media/sde1 type ext3 (rw,nosuid,nodev,relatime,errors=continue,data=writeback) regards, Ridz > Hi Ridz. > > What do you mean by "I've formatted it to type 83". > > Did you just change the partition type or did you actually format the > filesystem? I ask because writing a large file to an NTFS filesystem can > get progressively slower. If you just changed the partition type, that > will have no effect on the filesystem at all. > > In another terminal, type > mount > > and post the output. That will show what devices are moutned and what > filesystem is in use. > > Regards, > > Andrew Zajac > > > > --- On Sat, 1/8/11, [email protected] <[email protected]> wrote: > > From: [email protected] <[email protected]> > Subject: [Bug-ddrescue] Need help - ddrescue very slow - avg 27kb/s > To: [email protected] > Received: Saturday, January 8, 2011, 9:59 PM > > Hi, > > Need help. I've ran ddrescue for a few days and it only rescued 10G out of > 500GB. I've tried various command of ddresue but I find the average rate > to be very slow as compared to other examples that I've read in the > archives. I've installed ddrescue 1.8 and 1.13. I'm new to Linux and I'm > not sure which version I'm using now. I've also formated my recovery > harddisk to ext3 in hope that the speed would increase. But unfortunately > it didn't. > > My hard disks configs are as follows: > > Problem drive : /dev/sdc 500GB NTFS - Windows detected it as unallocated > Recovery drive: /media/sde1 1TB ext3 - I've formatted it to type 83 > > Command: > > ./ddrescue --no-split --cluster-size=1024 /dev/sdc /media/sde1/rescue.img > /media/sde1/rescue.log > > Current status: > rescued: 226559 kB, errsize: 0 B, current rate: 27594 B/s > ipos: 226559 kB, errors: 0, average rate: 27431 B/s > opos: 226559 kB, time from last successful read: 0 s > > Is there anyway for me to speed up the process. > Please help. Thanks. > > regards, > Ridz > > > > > > > > > > _______________________________________________ > Bug-ddrescue mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/bug-ddrescue > > > _______________________________________________ Bug-ddrescue mailing list [email protected] http://lists.gnu.org/mailman/listinfo/bug-ddrescue
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