Question regarding my results in kprobe on a liteon 812s




I am new to all this stuff, I spent a few hours reading the threads here and I
started to use the kprobe utility a few days ago.

I have burned a big iso file onto a Ritek G05 - DVD-R at x4 speed using
DVD Decrypter, and after the burn was complete, I ran the BLER check in
Kprobe (in x4 speed) and I got the following result :

Date : 3/30/2005 11:59:40 PM
Model : 1-0-0-0 LITE-ON DVDRW SOHW-812S US0Q
Disc : DVD-R , RITEKG05 [RiTEK Corporation]
Speed : 4x
ECC blocks sum (PI/PIF) : 8/1
Scanned range : 0 - 2197135
Sampling count : 124724
Errors : 0
PI Max : 406
PI Average : 226.30
PI Total : 3616024
PIF Max : 12
PIF Average : 1.93
PIF Total : 30876

I would like to know if this is a quality burn, I saw all kinds of numbers in the
threads, but I still don’t understand this issue fully, so by experimenting and getting the feedback here, I hope that I will learn it better.

Also, how can I cause kprobe to show a graph, I tried to change all kinds
of settings but I couldn’t get the PI and PIF graphs to show the changes
during the test.

Thanks :slight_smile:



@ itayda
Welcome:). Good job on doing some research first and using Kprobe. :cool: You can read Interpreting PI/PO error scans to find out what these graphs mean. PI/PO is now referred to as PI/PIF. Roughly, PImax<280; PIFmax<4. So you can see that your results are over the range of what would be considered a good burn. You most likely will have problems with reading/playing that disc…sorry :sad: . RitekG05 isn’t the best stuff you can use…my favorite is RICOHJPNR01 4x+R media…it can be burned at 8x with excellent results or at 4x for even better results :iagree: .

Attaching disc quality scans to your post will help us help you. We really would need to see the graph as its nuances reveal many subtle details of the burn. Posting just the numbers is OK if they are really low(which would be an excellent burn, which yours are not), but numbers such as yours could be interpreted many ways, both good and bad.

As for ‘showing the changes during the test’, Kprobe is not longer able to show real-time graphs of the scan as it would affect the outcome. You can watch the numbers accumulate during the scan and the graph is presented once the scan has finished.

The FAQs are always a good place to start if you have any questions


Hi Please and many thanks for your help, I appreciate it :slight_smile:
Its so good that there are people like you who are willing to help, here here !!!

The only reason I bought the Ritek DVD-R’s is bacause of my son,
he plays so much with his fifa soccer game on his ps2, that the disc is
filled with scratches, this is his favorite game and since I bought it for him
he played for many hours, so now he wants to make a backup so he can use
it instead of the original.

I checked around on the internet and asked a couple of folks, and I was told
that Ritek is a very good brand that fits this purpose.

Originally, I wanted to buy the x4 DVD-R because I thought that burning at
x2 is better, but they were out of stock, so I bought these x8 (the strange
thing was that when I chose x2 speed on DVD Decrypter, it still burnt the dvd
at x4 speed (maybe because it is a x8 DVD-R ???).

Anyhow, I followed your instructions on the previous thread, and made two
more kprobe scans, but I still ca’t get the graph right, in the first scan it
showed me the PI graph, but not the PIF, so in the second attempt,
I right clicked on both graphs, and using ‘set line color’, I changed the color to green, and using ‘set error color’, I changed the color to red, but after
that scan, I did not get any graphs at all, any ideas here ?

I attached the two png file anyway so you could see them.

Last thing - I wanted to show you a scan result of a memorex DVD+R x4
I have, which I did a few days ago when I started playing with the dvd’s.
I think I done in in the Nero tool cd-speed.
I compared it with the two scan’s I did today and with the one I posted here
before, and it is way way better, here take a look :

General Information
Firmware: US0A
Disc: DVD+R (CMC MAG F01)
Selected speed: 4 X
PI errors
Maximum: 14
Average: 4.92
Total: 54270
PI failures
Maximum: 3
Average: 0.23
Total: 4774
PO failures: n/a
Jitter: n/a
Scanning statistics
Elapsed time: 14:11
Number of samples: 125653
Average scanning interval: 1.13 ECC
Glitches removed: 0

Thanks a million :slight_smile:



@ itayda
Does the disc you burnt work in the PS2? That is always the best test beyond any scanning. Riteks can be a good brand/MID, but some MIDs are better than others, and they have been known to give inconsistent results. For your next batch of discs, see if you can find some of the ones I suggested before. The link I gave you has several brand-names that they appear under. If you get those R01+R discs, you may benefit from changing the booktype to ‘dvd-rom’ as they may have better compatibility.

You may also benefit from upgrading your firmware to the latest official version…US0Q …or you may want to try a modded firmware to upgrade your 812 to an 832 using firmware CG5G that may give you even better results, but that will void your warranty. You can also set the booktype to be automatically done for every burn. As for burning at 2x, that may have been true a year ago, but burners now are capable of excellent results at 4x or 8x or even higher, so that theory may not be as relevant today. If you are looking for the absolute best results, I would suggest burning the discs I recommended at 4x speed…that is what I do(with modded firmware:) ) for maximum quality.

For your Kprobe configuration, you can choose colors after the scan but before closing the scan. You were close and I’m not sure where you made your mistake. You may have chosen a white or a custom color and not saved properly…I don’t know. Make sure you click OK after a color change. It should change instantly…keep selecting colors until you can see one, and don’t save until you find one. I like the default deep blue for PI and red for PIF. Don’t select ‘Logarithm dia’ or ’ show marks’, but do select ‘auto y axis’(you already have). Error color I use is black and error value=1. ‘delete highest value’ is for when you get a single high spike and it skews the graph so you cannot see anything else. It will remove the highest value, and you cannot replace it afterwards.

It looks like your CMC MAG F01 was a good-to-very-good result :iagree:


Hi please and thanks for your kind help :slight_smile:

I did not have a chance to test the dvd yet because my son away at
my brother and so is his ps2, but I will do it next sunday.

I looked for the RicohJPN01 dvd’s - I think that it will be very hard to find
them, many brands use then, but when you buy a brand dvd like Maxell, LG
or Phillips you don’t know really who is the real manufacturer, only after you
take the dvd’s home and check it you can tell.

Usually they sell 25/50/100 cakes/spindles, so if I buy it and its not that, then
I’m stuck with it.

I managed to find one online store who specifically states that its dvd’s are
from this batch, each one costs around $2.3 which is awfully expensive.

You wrote that you are using these for a while, maybe you can help me to
identify them - how does the packages of that brand appear when it is sold
as Fujifilm / LG / Maxell / Memorex / Philips / Ricoh / Ritek / Sony / TDK dvd’s.

about the booktype change, I’m not quite sure what it is exactly and why it
can help, but I will follow up on your link, and learn more thanks :slight_smile:

I have already upgraded the firmware on the 812s to us0q (it was us0n
before), I am a little afraid to do the change to c5gc, did it help for you
(BTW, do you have a 812s@832s ?)

As for Kprobe, I did another scan with the Memorex DVD+R x4 I have, and I
got it right this time, but only after a struggle with the software, after
the scan it only showed me the PIF graph, so I started pushing on the PI
graph and I finally noticed that it sometimes zoom’s in on a smaller range of
number’s. I don’t know exactly what I did, but suddently the whole graph appeared.

So what do you think about these results ? do you think I will have better
results with the Ritek DVD-R x4 (I ordered some today), maybe these results
are a little better on a DVD+R then a DVD-R ?

Thanks and have a nice day :slight_smile:



@ itayda
I don’t know where you are but in the USA I get the Ridata-branded RICOHJPNR01s here. This is the only place I buy them…why mess with a good thing? :iagree: The link I sent you before might have some pictures of some actual retail boxes or you may just have to look around and ask around your area or online a bit to find them.

I’m glad to see you got your kprobe right…that looks like a pretty good burn…the PIs are a bit high and they rise-and-fall, but they are far less important than PIFs…you do have the thick PIF spike of ‘4’ in the middle, but that should be OK unless you have a very picky player. The RITEK 4x-R media is fair in quality and has been known to be inconsistent even within a spindle, so I would not expect better results than your CMCMAGF01 burn, and it may be worse. Liteons also do much better with +R media…sad but true.

Things that may help with your burns is to keep your HDD defragged and try not to multi-task during a burn, as these things may cause buffer underruns, but I don’t see evidence of that in your scans, so you are probably doing a good job.

I have an 851@832


Hi Please :-),

I am not from the USa but from Israel, yes, so it is a little more difficult to
get these cd’s.

BTW I bought the memorex DVD+R which you saw in the US when I was there a couple of months ago, wish I didn’t buy 200 Taiyo Yuden.

I aggree that the liteon is much better at the DVD+R, I bought the DVD-R
just because of my son (to backup this fifa game), I’m glad I bought only
10 dvd’s.

I still have problems with the kprobe graphs, I did another test, the results
as far as I can tell I very good and it is surprising, this is a DVD+R of a brand
called Fortis, I use them to backup not so important stuff, and I heard that
their quality isn’t so good, but according to the scan, wel see for yourself
(If you look in the graph’s you’ll see that in the PI I could get the graph
to show normally, is there anything speacial you do with the graph section
before or after you do the scan ?

Thanks for al your help :slight_smile:



@ itayda
i don’t know what you are doing to kprobe to get your PI graphs to do that, but you might need to choose ‘auto y-axis’ in the PI graph. I thought you had your settings finally corrected. Once you set your settings in Kprobe, you should NOT have to mess with them at all.

The numbers look excellent though :iagree: , so those may work for you…I have never heard of NANYARJB.

Taiyo Yuden are supposed to be very good discs unless they are fakes, so don’t throw them out…maybe a better firmware will come along and you’ll get better results with it…


Hi Please :slight_smile:

The ‘auto y-axis’ is already chosen automatically when I open Kprobe, really

I will look up the ‘NANYARJB’ media code and see what I can find, this starts
to be interesting.

I found a site here that sells Taiyo Yuden DVD-R x8 media code: TYG02
and they declare that if you are not pleased with the purchased DVD’s, you
can return them within 60 days, so its fair, I’ll cancel the Ritek G04 DVD-R’s
and try these.

After I will test the Ritek G05 DVD-R (backup of ps2 fifa), I will decide if I
change anything in the 812s, I prefer to stay with the US0Q F/W, but lets
see how will it work in the ps2.

Thankfor all your help, I appreciate it very much :slight_smile: