Redump Forum — Weird thing when researching GDI images?

Re: Weird thing when researching GDI images?

null@example.com (pig_10) — Sat, 03 Sep 2011 00:11:32 +0000

sorry for ultra long late reply
One thing I can say is, ImgBurn doesn't support multisession burning at all.
this is the reason why your disc doesn't work - DC just won't recognize single session disc as game disc.
I made some search, and found only way to write multisession disc is cdrdao, cdrwin, or clonecd
theoretically, you can made some hack with clonecd's image file and toc file to write multisession discs... I'm still researching
from your result, I think you just didn't made a multisession disc. try to write a multisession disc properly, and you may get some new results

Re: Weird thing when researching GDI images?

null@example.com (TailS_tff) — Sun, 14 Aug 2011 07:11:08 +0000

1st try :
Buggy Heat dump on Gigarec 1.4x with a compatible cue (2nd session at lba 45000 using REM SESSION 2)
Burn with imgburn : OK (mode SAO !? so there is a empty burned space between 2 sessions)
DC : bad, can't read support.

Re: Weird thing when researching GDI images?

null@example.com (TailS_tff) — Mon, 11 Jul 2011 10:52:35 +0000

Hi, I'm wondering if someone could write me a CUE file (multi session compatible with isobuster or cdrwin) to test burning gigarec cd.
I have a dump of HDR-0001 Sonic Adventure to test.
And, even better, did someone know a tool for convert those multi session CUE to another format like cdi or nrg.

Re: Weird thing when researching GDI images?

null@example.com (TailS_tff) — Sun, 26 Jun 2011 12:45:43 +0000

Hi !
I did some research in this way too.
Several year ago, I burn some test image to verify compatibility of gigarec for dreamcast : none of them are working.
To my mind, there is a possibility to burn recognized gigarec disk, but we have to know some facts :
Gigarec 1.4X is depreciated from plextor, at the launch of the premium, manufacturer says me that this coef are not reliable ; it was delete from write option in the final firmware.
Perhaps we could try burn DAO 1.3X Gigarec for the two session into a 100 min cd

If we can try something together, it will be nice ^^
I own all plextor drive since the old PX-32 to PX-760, except the premium2 and plexeraser.

I look a way to create valid cdi image from gdi, but I didn't fin anything for now…

Doing this with the old cdrecord in "session at once" cause plextor to burn in gigarec the two session, but there is a empty space between them (the start position of the second session was calculated without the gigarec setting).

Weird thing when researching GDI images?

null@example.com (pig_10) — Tue, 19 Apr 2011 18:28:55 +0000

I don't know is this on topic or not...
I'm looking for a way to burn GDI image back to CD-R, and I tried to merge those tracks back to a DAO image.
After I inserted enough blanks after track 2, merged all tracks together and wrote a CUE that indicates Session 2 starts at LBA 45000 (I know there is no way to burn this image back to CD-R, but just for researching.). Suddenly, IsoBuster recognize the file system! All files can be extracted directly... Maybe it's really an old news, but why IsoBuster can't recognize the file system when I open the data track directly?
And I made some basic calculation, starting from idea: How if I burn a GDI image by using hybrid method of GigaRec?
Assume I'm using 90min disc, Burn 1st session in normal mode, and burn 2nd session starts from LBA 45000 in GigaRec 1.4x.
90min=405000, 405000-45000=360000, 360000*1.4=504000, 504000+45000=549000. Very close to original GD's 549150 sectors... If I burnt it successfully, will DC recognize it as a GD-ROM...?
Currently I don't have a Plextor PREMIUM... I missed last yahoo auction (3 days ago... bid at 1100 yen), waiting for next shot. And my Dreamcast is at MY home - I'm (living) at Japan but MY home not.