Re: [Bug-ddrescue] 10 days for 7.8gig?

[Antonio Diaz Diaz]

sean darcy wrote:
> > From in info pages, first I did:
>  ddrescue  -n -v  -b2048 /dev/dvd quark.iso logfile
...
> That took about an hour.

So it took ddrescue only an hour to discover your dvd is totally 
illegible. Not bad.


> Then:
> ddrescue  -d -v  -b2048 /dev/dvd quark.iso logfile
...
> This has been running for 10 days. logfile  is now up to 6MB. AFAIC,
> ipos/opos keeps going up to 7782 MB, then starts over.

If left alone, ddrescue will try every sector in the dvd. Given that 
this dvd seems totally illegible (ddrescue has rescued nothing yet), and 
supposing the reader takes one second to report every bad sector (very 
optimistic), ddrescue can be running for 44 days before finishing.

Try to rescue the dvd on another reader and if the first pass rescues 
nothing, give up. sorry.


Regards,
Antonio.