On Thu, 2006-03-16 at 12:06 +1300, Nick Rout wrote: > On Wed, 15 Mar 2006 15:55:17 -0700 > Joseph wrote: > > > On Thu, 2006-03-16 at 11:19 +1300, Nick Rout wrote: > > > On Wed, 15 Mar 2006 15:04:06 -0700 > > > Joseph wrote: > > > > > > > > > If I use: > > > > > > dd if=/dev/dvd of=backup.iso > > > > > > > > > > First of all, I would add the "bs" option to increase the buffer and > > > > > therefore > > > > > speed. Something like: > > > > > dd bs=100000 if=/dev/dvd of=backup.iso > > > > > > > > No, this command didn't work either, I got about 700Mb and it quit, > > > > though the light in the drive was flashing nothing was copied to ISO > > > > file. > > > > > > > > > > > > > > > I only get about 2Gb file and it stops or freezes, the disk is bout > > > > > > 4.3Gb > > > > > > > > > > That would indicate read errors. Is the dvd scratched or dirty? Wash > > > > > it with > > > > > lukewarm water and dishwasher liquid and try again. > > > > > > > > DVD is brand new, no scratches. > > > > > > could be the reader then? Do you have another computer with a dvd drive > > > and 4.7g available space? > > > > Yes, I've tired on two different systems, one is x86 and the other amd64 > > with similar result on both of them; the copying stops at some point and > > doesn't go any further. > > One system has Philips DVD drive and the other one has BenQ DVD > > > > I can burn perfect DVD every time but getting it back in form of ISO > > from DVD is a pain - IMPOSSIBLE. > > > > > these things are fiddly, there are billions of little holes and a laser > > > light reading them. There are manufacturing tolerances in the reader and > > > the disk. There are imperfect firmwares in the drives. In short, > > > sometimes a particular disk and a particular drive just don't get on. > > > The drives also get old and tired. IMHO you need to be prepared to throw > > > the drive out after some indeterminate (but not long enough) period and > > > get a new one. > > > > > > Is this a movie or data? Have you tried just mounting then copying the > > > files to your hard drive. This might identify where on the disk things > > > are going wrong. If it is a small or unimportant file you might still > > > have an effective backup. > > > > I can mount the DVD without any problems. I created the DVD using > > dvd-slideshow and it worked perfectly. > > I can rip VOB's from the DVD using k3b or dvdrip; works in both > > programs. > > So I can recreate the DVD but what bugs me that I can not make a backup > > to an ISO file using command line. > > OK I see you have considered most of the possibilities i considered. > > how about: > > mount /dev/dvd /mnt/dvd > mkisofs -o mydvd.iso /mnt/dvd > > (disclaimer, other options might be needed. is mkisofs even the right > program for dvd's? k3b is making me lazy)
Good try, but it didn't work either. When, I mount the DVD and try: mkisofs -o mydvd.iso /mnt/dvdr/ I get: mkisofs: Input/output error. can not read from '/mnt/dvdr/video_ts/vts_01_0.bup' I run out of ideas as well how to copy (my own) DVD to iso file. Thanks to all who responded, I'll put this case to rest I think. -- #Joseph -- gentoo-user@gentoo.org mailing list
