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DVD+RW: full erasing and booktyping

DVD-R/W, DVD+R/RW, DVD-RAM

DVD+RW: full erasing and booktyping

Postby dodecahedron on Sat Jul 01, 2006 2:02 pm

i full-erased a DVD+RW that had been booktyped as DVD-ROM, and it stayed that way. i was surprised since i had thought it would "revert" to DVD+RW booktype.
isn't DVD+RW the "default" booktype?
doesn't full-erase affect the booktype?

anyone else's experience and comments welcome.
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Postby MacClipper on Sat Jul 01, 2006 10:01 pm

prob. depends on which burner (and its default RW booktype setting) you are doing the full format in eg. BenQs will full format to ROM.
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Postby dodecahedron on Sun Jul 02, 2006 4:46 pm

guess i didn't think of that one. #-o
it was full-erased it on an LG (GSA-H10L), LG drives don't booktype DVD+RW. i guess that's why it stayed -ROM.
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Postby Darth on Mon Jul 03, 2006 4:50 am

dodecahedron wrote:guess i didn't think of that one. #-o
it was full-erased it on an LG (GSA-H10L), LG drives don't booktype DVD+RW. i guess that's why it stayed -ROM.


I full-erased a DVD+RW w/ DVD-ROM booltype in a H20L and the disc reverted back to DVD+RW booktype.

how annoying
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Postby dodecahedron on Mon Jul 03, 2006 5:51 am

weird!
the H20L does not do DVD+RW bitsetting, does it ? AFAIK no LG drive does.
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Postby Darth on Mon Jul 03, 2006 6:19 am

dodecahedron wrote:weird!
the H20L does not do DVD+RW bitsetting, does it ? AFAIK no LG drive does.


changing the booktype involves writing to the first few bits (or sectors???) of a DVD+ disc, according to a CDFreaks article.

If LG drives can change the booktype from DVD-ROM -> DVD+RW (in my case, H20L), it simply means that the drive CAN write to those few bits.

LG is just refusing to implement booktype changing in firmware from DVD+RW -> DVD-ROM, that's all.


EDIT : Nero 6.6.1.4 full erase in the LG does not change the booktype, but the format option in CDSpeed does.
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Postby dodecahedron on Mon Jul 03, 2006 3:31 pm

another possible explanation is that the H20L is made with a Panasonic chipset whereas the H10A/N/L with Renesas chipset. this is what i had thought was the explanation, till your last post.

i gather form your post that you did a full-earse with CDSpeed. so it might be a software issue after all.
did you do 'Erase' or 'Format'?
off-topic: what's the difference between 'Erase' and 'Format' in CDSpeed?
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Postby Darth on Mon Jul 03, 2006 10:11 pm

dammit...just killed a Sony S11 disc by accidentally hitting its edge on a table. The disc split apart at the edge :(

anyway, using another disc that's been set to DVD-ROM in my Liteon, I did some tests in the H20L.

N6.6.1.4
Quick Erase -> Still DVD-ROM
Full Erase -> Still DVD-ROM

CDSpeed 4.51.3
Quick Erase -> Still DVD-ROM
Full Erase -> Still DVD-ROM
Quick Format -> DVD+RW
Full Format -> no point testing....

the drive itself is capable of changing the booktype of a DVD+RW disc. One can only guess why LG doesn't want to enable changing of booktype to DVD-ROM. Maybe it's a company policy or maybe LG's just being a lardbutt :lol:
LG GSA-H42N DVD-RAM (RJ11, auroreset RPC2)
BenQ DW1655 DVD-RW (BCIB, RPC1)

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Postby dodecahedron on Tue Jul 04, 2006 3:55 am

very interesting.
i'll experiment when i get a bit of time.
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Postby dodecahedron on Tue Jul 04, 2006 5:20 am

off topic: where did you get CDSpeed 4.51.3 ?
latest Nero 7 update ?
it's not on the website.
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Postby MediumRare on Tue Jul 04, 2006 7:52 am

Yeah, it's from the latest Nero 7 update. I found this linkk in the CD-Speed thread at CD-Freaks.

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Postby dodecahedron on Tue Jul 04, 2006 3:01 pm

thanks.
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