Miscompares

[Ghitulescu]

I know the subject has been treated in various ways, however:

After burning a DL with ImgBurn 2.4.4.0 (I know it's old) using an USB drive some 50 miscompares (some 200 errors per sector each time) appeared in the log.

There are not write errors (PI under 10, PO rarely 2) and the disk provided a perfect reading curve. --> writing procedure is excluded

The FC/B command also indicated that the files on the DVD are different from those on the HDD (using the same drive). --> miscompares due to unidentical structural arrangements are excluded

Any ideas what went wrong?

[setarip_old]

You might want to check the following sub-forum at Digital Video Forums. Since being "crippled" regarding ripping, etc., this is one of their few thriving sub-forums:

http://forum.digital-digest.com/forumdisplay.php?f=69

[Ghitulescu]

I've read the whole subforum, no similar case.

Meanwhile I did a file compare to see what happened.
Well, the written files had 2 bytes less, like an entire block of data was shifted. This ran exactly the same for each miscompare (2 bytes missing, no more, no less).
Something like:

address HDD DVD
xxxxxxxx XX 01
xxxxxxxx YY 02
xxxxxxxx 01 03
xxxxxxxx 02 04 and so on....

So again, anyone any idea?

[SquallMX]

Are you using AnyDVD or a similar program as a background process?

[Ghitulescu]

No, AFAIK it happens to DVD DL only (probably only 2 movies, probably it's related). I don't use AnyDVD, DVD43, InCD or any other software that interposes itself in the driver list.

However I changed the burner and the same DL had no problems at all.

The only explanation I conceive now is that is a sort of incompatibility between the GSA-H10A and the USB interface. A similar issue I had long time ago, again an LG, this time with the FireWire (Oxford chip).

[Ghitulescu]

The PX760 gave me yesterday such a DL too, on the same USB interface. Funny thing is that the disk as such does not exhibit any artefacts (due to the missing bytes), it plays aboslutely ok. Actually all of them. The same content burned with an internal burner gave no compare error at all :confused: :confused: :confused: :confused: but the quality of the burning is not so great.... so I would prefere either the Plextor or the LG (nb: it's a laptop, so I cannot simply exchange the drives, I have to rely on the USB interface).

[Emulgator]

I can report a certain incompatibility with an Initio INIC-1530L chipset.
This seems to handle USB as well, Firewire In/Out was extra: Agere L-FW802C.
This came in a Plextor PX-740 UF external drive enclosure and has driven me nuts over time.
I sold the drive, replaced it by anything I got into my hands, nothing really changed.
P.S. There may have been a Plextor-Initio specific driver fix smuggled into PlexTools,
it worked once but I did not bother to reinstall this on my next OS build, so Plextor forgive me...

In the end this piece would stop XP SP3 from starting up when plugged in via Firewire,
not so via USB, would read perfectly in full speed, but writing only lead-in (Imgburn, Nero, C2DVD),
then stalling forever and so on.
Good. I used some other Mapower enclosures with Prolific PL-3507 controllers, these worked rock steady.
Agere Firewire chipsets do work well in my other enclosures,
so I do not spill much doubt over these.

Today I finally slaughtered the Plextor enclosure, stripped the controller off,
kept the power supply and made it a controllerless warm home for a LG Bluray-Burner which has SATA anyway :-}