HOWTO: DVD -> VOB -> ISO -> DVD ... or, duplicate DVD5 exact copy

trox · 07-25-2007, 03:56 PM

Quote:

Originally Posted by Bruce Hill

Originally posted by demerson3

Your guide looks good from a cursory read. May I give you one CLI pointer?
How to cut out K3B -- which is my favorite thing to do with GUIs, especially
if they're part of KDE.

What is your device?

Code:

mingdao@silas:~$ dmesg | grep -i atapi                                                                                                     
hda: PIONEER DVD-RW DVR-109, ATAPI CD/DVD-ROM drive
hdc: TSSTcorpCD/DVDW TS-H552U, ATAPI CD/DVD-ROM drive
hda: ATAPI 40X DVD-ROM DVD-R CD-R/RW drive, 2000kB Cache, UDMA(66)
hdc: ATAPI 48X DVD-ROM DVD-R CD-R/RW drive, 2048kB Cache, UDMA(33)

Now use the power of "dd" to make that exact copy you want:

Code:

mingdao@silas:~$ dd if=/dev/hdc of=China.iso

And check it, too.

Code:

mingdao@silas:~$ diff /dev/hdc China.iso -r
mingdao@silas:~$

Now burn, baby, burn!

Code:

mingdao@silas:~$ /usr/bin/growisofs -dvd-compat -Z /dev/hdc=China.iso

And you've successfully made an exact copy faster than K3B
using the raw power of GNU/Linux, and any errors while you
burn will be right there in front of you.

NB: You can always look at the K3B log and see what commands it used.

I tried these instructions and the dd command did seem to want to copy the data from /dev/hdc, but here is what I got:

sai:~$ dd if=/dev/hdc of=TheBluesShow7.iso
dd: reading `/dev/hdc': Input/output error
1504+0 records in
1504+0 records out
770048 bytes (770 kB) copied, 5.81758 seconds, 132 kB/s
sai:~$ diff /dev/hdc TheBluesShow7.iso
diff: /dev/hdc: Input/output error

What happened here? What should I do next? I prefer the command line myself too.

Thanks in advance to all replies

trox

trox · 07-25-2007, 04:21 PM

Quote:

Originally Posted by Laban

cat readss the device (your cd/dvd drive). What it reads is piped (sent) to bzip2 which is a compression utility like zip/rar/gzip etc. The -vv part is just to show that something is happening. Bzip2 sends the now compressed information out to a file - my_file.iso. But just to show that the file is compressed, we'll add .bz2 as well.

So:
cat YOUR_DVD_DRIVE_GOES_HERE | bzip2 -vv > FILENAME_OF_SAVED_IMAGE.iso.bz2

Made any sense?

I followed your directions using "cat" and this is what I get:

tsai@tsai:~$ cat /dev/hdc | bzip2 -vv > TheBluesShow7.iso.bz2
(stdin):
cat: /dev/hdc: Input/output error
block 1: crc = 0x528d4d08, combined CRC = 0x528d4d08, size = 47252
too repetitive; using fallback sorting algorithm
final combined CRC = 0x528d4d08
117.332:1, 0.068 bits/byte, 99.15% saved, 770048 in, 6563 out.

What is happening here? What should I do now?

Thanks,

tsai

Bruce Hill · 07-25-2007, 07:44 PM

Quote:

Originally Posted by trox

I tried these instructions and the dd command did seem to want to copy the data from /dev/hdc, but here is what I got:

sai:~$ dd if=/dev/hdc of=TheBluesShow7.iso
dd: reading `/dev/hdc': Input/output error
1504+0 records in
1504+0 records out
770048 bytes (770 kB) copied, 5.81758 seconds, 132 kB/s
sai:~$ diff /dev/hdc TheBluesShow7.iso
diff: /dev/hdc: Input/output error

What happened here? What should I do next? I prefer the command line myself too.

Thanks in advance to all replies

trox

Perhaps a bad DVD? Dirty, scratched? Clean it and try again ... also try running as root rather than user. And also try another DVD -- perhaps a new one?

demerson3 · 08-07-2007, 12:22 PM

To cut to the chase: check out dvdbackup. There may be other tools as well.

I still believe dd is the wrong approach. There are special considerations, including error correction, that should be utilised when reading optical media. dd was not designed for optical media. It was designed for magnetic disks, which are far more reliable in terms of getting a good read the first time.

"cdparanoia" is an example of a program that extracts audio tracks from audio cd's, using error correction and other techniques that assist in reading optical media. You can get a much better read from cdparanoia than from dd, because it reads intelligently.

So, for your CLI needs, check out dvdbackup, and look around for other tools that are designed to read dvd's. I'll integrate this into my main post when I have the time.