LiteON SOHW-832S don't burn RICOH DVD+RW 8x (RICOHJPN-W21-01)



Hi list,

As this media wasn’t known from the regular firmware (VS0M), I downloaded the CG5J and tweaked it with omnipatcher, replacing RICOHJPN-W01-00 with RICOHJPN-W21-01 (info by: NeroInfoTool) with 4x burning capability.

[Formating the media never complained and always said it is Ok.]

Now NeroExpress tell it burns @ 4x (was 2.4x before installing CG firmware); k3b, under Linux, also say that, but the real-time speed probe says it burns @ ~2.0x.

In both softwares everything seems to happen correctly BUT neither NeroExpress nor k3b can verify the burn: the disk is empty (and it seem effectively blank at sight).
Inserting the DVD in any DVD-ROM drive read it as empty.

If you have any clue it will be welcome (I’ve to backup a disk, and don’t want to use regular DVDs)

Thanks in advance,



There is surely no writemethod included in the firmware to write them at high speeds.

So you can do nothing.


What do you mean exactly?

I don’t want to burn them @ 8x, but I would like to burn them, even @ 1x, do you mean it is totally impossible to use them or else?

Thanks in advance




W11 is 4x +RW, W21 is 8x +RW. There are many physical differences between 4x and 8x +RW media, such as dye, thermal specification, etc, etc. 8x +RW media is not compatible with 4x +RW generation drive. 8x +RW media requires more laser power than 8x +R/-R drive and early 16x +R/-R drive. So the drive that supports 8x +RW has newer laser pickup.

SOHW832S is 8x -R/+R 4x +RW generation drive. 832S’s maximum laser power is too low to burn 8x +RW media.


Diseree has a good point there, and on other newer drives we seldom see any low, 2.4x or 4x speed write strategy on 8x rated +/-RW’s.

Just a sidenote, not related to topic.
In 1653 CS0T firmware, OmniPatcher [I]only[/I] indicates a 4x write strategy for RICOHJPN-W21-01.