I'm sorry to resurrect this thread after so long, but I have a 1TB drive that PhotoRec has been running on for 22 days, and by its report, it's only 2.8% of the way through the drive.
I did a copy of all data that TestDisk could read, using TestDisk 6.14, and while that took many hours, it wasn't as long as PhotoRec 6.14 is taking.
I saw Christophe's comment in an earlier post on this thread:
cgrenier wrote:It's really too slow. Do you see read error messages when processing using PhotoRec ?
I can't see any errors (where would I look?), and PhotoRec has consistently reported estimated time to completion in the 18000-20000 hour range.
I'm running this on a relative's hard drive, which contains photos from a large time span. The drive apparently lost power in the middle of a write cycle (or something), and before I undertake to try to rebuild the partition table, I wanted to recover as many photos as possible, corrupted or not, as it's the photos that are the important thing, and not the drive, itself.
I assumed that due to the large size of the disk, it was not unreasonable to expect a lengthy recovery process, but when I found this thread and read it, it raised concerns that there might be something wrong with the recovery process, even though it is proceeding, although very slowly.
I found this thread when I was browsing the forum to find out whether I can stop PhotoRec and restart it, without losing my place.