Hello, Again not a bug, just a question (and maybe a suggestion). Ddrescue now claims to have successfully rescued my hard drive, awesome, but a few strange things happened and that makes me doubtful : I was rescuing a 1TB HDD, the first 400GB went smoothly, it was pretty fast with few errors, from 400GB to 420GB it went extremely slow (a few hundred B/s at worst and only a few thousands on average) and then the disk must have failed : it wasn't here anymore according to Disk Utility and DDrescue was going over the 500+ GB left to rescue in seconds (over and over ad infinitum it seemed, but there was no disk activity according to the motherboard), I then rebooted and the disk was back, I launched DDrescue again and after not long the disk must have failed again since DDrescue flagged more than 500GB as bad sectors, I rebooted again and started to rescue the bad sectors (ddrescue -d -f -r3 ...) and surprisingly things went smoothly and it was done in like 2 days with only a small bad sector of 452608B that couldn't be recovered (my source disk is now flagged as imminent failure though).
Maybe everything is well and I've been lucky, but as I said I'm a bit doubtful and would like to know if there's a way to check if ddrescue did a good job or not (my disk was part of a raid 5 so I can't do this the obvious way, of course I could try to do a raid recovery and see how it goes but I can't do this before a few days and anyway, in the mean time, I would prefer to check before hand if the disk was rescued successfully or not...). I didn't read anything about this in the manual so I don't know if ddrescue can do that, but it would be useful (one way to check this quickly could be to select a few random places on both disks and compare them, but maybe some other software already does that?). As usual thanks in advance, you've been very helpful. TK _______________________________________________ Bug-ddrescue mailing list [email protected] https://lists.gnu.org/mailman/listinfo/bug-ddrescue
