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Re: dvd burning problem, dvd+rw-tools, LG GSA-4120B

Track State:           invisible incremental
Track Start Address:   0*2KB
Next Writable Address: 0*2KB

In DVD+R case the last line would mean that it's OK to write.

So the disc is not (yet) a coaster after all, eh?

Note that I wrote "*would* mean." Meaning that I wanted to say that there is a *remote* possibilty that "the disc is not (yet) a coaster," but not "atfer all":-)

Try another media brand. Also try to lower the recording speed. Being rather bizarre, the problem smells poor firmware media support for particular brand or media product. A.

OK, this is wierd, I tried -speed=6 and -speed=4 but
growisofs kept saying the "Current Write Speed is 8.2x".

# growisofs -speed=4 -dvd-compat -Z /dev/hdc=/tmp/tj1-60.iso
Executing 'builtin_dd if=/tmp/tj1-60.iso of=/dev/hdc obs=32k seek=0'
/dev/hdc: "Current Write Speed" is 8.2x1385KBps.

This is weird... According to dvd+rw-mediainfo your unit offers 4x and 8x, so that -speed=4 should result on 4x, not 8x. But wait a minute! The code pulls the speed list from unit and simply assumes that lowest velocty is 1x, while in your case it's actually 4x. OK, it's time to reconsider this for next update, but as of now -speed=1 and -speed=2 are those which are mapped to 4x and 8x for your unit. Yes, it's somewhat confusing, and it will be fixed. Till then just bear with downscaled -speed arguments.

# growisofs -speed=1 -dvd-compat -Z /dev/hdc=/tmp/tj1-60.iso
Executing 'builtin_dd if=/tmp/tj1-60.iso of=/dev/hdc obs=32k seek=0'
/dev/hdc: "Current Write Speed" is 4.1x1385KBps.
  ... and so on until ...
3505717248/4679391232 (74.9%) @3.9x, remaining 3:36
:-[ WRITE@LBA=1a30a0h failed with SK=4h/ASC=09h/ACQ=01h]: Input/output error

4/09/01 stands for "TRACKING SERVO FAILURE" (see http://fy.chalmers.se/~appro/linux/DVD+RW/keys.txt) and means that tracking circuitry has hard time following pre-groove spiral. This indicates either poor media or poor media support in firmware or simply deficient hadrware [in which case you should ask your vendor for replacement].

Different SK error code now: 04/09/01. I could mount the disc, and see
the list of files, but the files are not readable.

You should be able to read some files, those which physically residing on media prior point of failure. The fact that you can list files confirms this as directory structures are collected in the beginning of the media. A.

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