DVD+RW: full erasing and booktyping

[dodecahedron]

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.

[MacClipper]

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.

[dodecahedron]

guess i didn't think of that one.
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.

[Darth]

guess i didn't think of that one.
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

[dodecahedron]

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

[Darth]

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.

[dodecahedron]

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?

[Darth]

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

[dodecahedron]

very interesting.
i'll experiment when i get a bit of time.

[dodecahedron]

off topic: where did you get CDSpeed 4.51.3 ?
latest Nero 7 update ?
it's not on the website.

[MediumRare]

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

G

[dodecahedron]

thanks.