IO Magic 24x10x40
 

That's the burner that i have, it's an IO MAGIC 24x10x40, it's the second fastest one on the market right now, i think. But you see i'm not sure if it's running the way it's suppose to. It takes me 20 mins to burn a full CD, is that right? Is there somehting wrong with my system or the burner? Does anyone know?

Thanks in advance

One of two reasons which both come down to pretty much the same thing

1) If you were burning on the fly, then the drive reading the cd isn't supplying the data fast enough - and if you're burning at 24, then this is pretty normal

2) If you're burning from your hard drive, a lot of buffer underruns may be occuring due to you having a slow system.


O yea, just one more thing, if you're using lasar calilbrate in Clone CD, then it may restrict the speed due to the quality of CD-R

well 24, but not on the fly
 

I am burning at 24, but i'm not burning on the fly. So what's the point of having a 24 if it takes so long to burn?

Ya i burn from my hd, because that's where everything is, so how do i prevent buffer underruns, and how can i make it burn faster?

How do you guys burn?How long does it take to burn for you guys?

It may be cos ur processer is slow and ur hard drive is fragmented. This will cause a lot of buffer underruns and the more of these that occur, the more the burn will have to stop and start.

700Mb Data CD would take 3-4mins in my Plex 24X, 900Mhz Duron.

wow, that explains part of it
 

That explains part of it. I have a AMD K-6 400 mhz processor, with 88 megs of ram. But it shouldn't take 20 mins to burn a full cd should it? Does ram have anything to do with it?

its probably your media..........

my media?
 

my media? What do you mean by my media? do you mean the type of files that i'm burning?

He means the cd you burn to.

But take this example. I used to have a AMD K6-2 450Mhz 128Mb RAM, burning at 24X I had about 300 buffer underruns.
With my new processor and RAM, I have about 2 buffer underruns.

See the difference?

You might actually find that by lowering the burn speed, the time taken could decrease. Try 16X and 12X and compare them to the 24X

The brand name of the cd?
 

Do you guys mean the brand name of the cd? like tdk, sony, etc....?

Ya same here i have like 200 buffer underruns.

Btw, after i burn my cd, my cd and my burner smells. Does this happen to you?

I thought burn was only a figurative word.

Yes we mean the brand.

Did you try burning at 16X and 12X and comparing them to 24X

LOL @ I thought burn was only a figurative word

burned @ 16 but didn't compare
 

Well i've burned @ 16x before but never at 12x. Well i've never actually compared them yet, but i think the times are the same. Roughly 20 mins each.

Modern CDRW's naturally require a much more powerfull system
to be reliable, my friend has a new CDRW on a Athlon 2000
1GB RAM 40GB SCSI 10KRPM HD and churns out coasters
all the time, or atleast CRCxxx?:O errored CD's. I also decided
to upgrade from my x4 which did any burn in never more than
15mins including leads/TOC all backups work inc SD2.xxx and
Prtctd Audio. Old CDRW required a pentium 60Mhz 8MB RAM
New Ricoh 24/12/40 requires P3 800Mhz 256MB RAM
and with my backup drive ATA 66 does coasters, only works
with ATA100 7200RPM also doesn't work with my old reliable software and new software is sht always complaining about
the CDR media quality - literally, I keep getting wrong media
errors and media speed errors in new software - old software
just burns it.:mad:

Oh yeah, I now burn in 3min + 1min TOC/Lead but still takes
longer than old drive with all the hassle in new software.

If burning takes long in x24 (which should take just over a minute)
try burning at my favourite speed x16 or less, because drives
automatically initiate error control at high speeds which slows them greatly, x8-20 may be faster than x24, it all depends on
when the high speed error control firmware code kicks in.

Oh yeah, CDRWIN RLZ!!!

Re: burned @ 16 but didn't compare
 

:eek:
U sick puppies, my x4 writes anything in 15min and U R saying your x12-24 does it in 20min :eek:

Re: my media?
 

Every1 knows U only get buffer underuns if you have loads
of CPU threads running or a baaad CDRWdrv/software/firmware.

My friend burns the latest stuff with a (1999) Smart Friendly x4
on Pentium 75Mhz 24MB RAM ATA33 HD. Never had an underun
e v e r. Had coasters a few times due to writing faulty data
from reading from a CDROM drive (doooh!).:D

Don't know how u guys found this forum but u prob don't
know the difference between Busmastering and Curbmastering.:>

never, ever have a seen a bad media error. i guess if you put pieces of paper in the drive, you will get that kind of stuff. anyways, MAKE SURE YOUR MEDIA IS RATED 16X before you try and write it at 16x

also, underruns tend to occur from processor heavy applications being run at the same time as a burn. if you just let it burn, you are oftentimes fine.

also part 2, are you running both hard drives on the same ide? or maybe a cdrom and a hard drive on the same cable? tsk tsk, if so ;)

It needs at least three minutes (and that really is MINIMUM if we are considering a full cd)

Maths:

1X = 150kb/s
24X = 3600kb/s

700Mb = 700,000Kb

700,000/3600 = 194.44444444444444444444444444444sec
that's 3mins and 14sec

and that's not taking into account that most drives write at 16X for the first few minutes of the disk, then move up to 20X, then move up to 24X. Then there's also lead in and lead out and the buffer underruns that may occur.
Rough estimate = 4mins 10sec for a 24X burn.

I believe your 20min burns at 24X are due to your slow system, but even when I was getting 300 buffer underruns it still only took about 10mins. Maybe the 10min difference is to do with out different drives. After ungrading my system it was cured - give it a go.

ungrading?
 

Ungrading your system? How did you ungrade it?

I took down some information while i was burning. I burned a data cd with 692 Mb or stuff w/ a TDK 80min/700Mb upto 24x CD.

So i burned one @ 24x, it took me around 13mins 21 sec. But buffer underrun was avoided 270 times.

Then i burned the exact same cd, except this time i burned it @ 20x. Which took about 13mins 22 secs. But with no buffer underruns.

Does that sound normal enough?

Re: ungrading?
 

Added more memory, new processor, new motherboard, hell I stripped it all except for the hard drive (which is gonna go soon as I'm running out of space, 2Gb left outta 18Gb).

The 20X burn w/out buffer underruns at 13mins is not normal at all. Using the above calculation, the minimum burn for 20X would be 3mins 53sec (that's bear min)

just to nitpick with you ghosthacker

1 KB = 1024 (2^10) bytes
1 MB = 1024*1024 (2^20)bytes

700 MB = 1024 * 700 KB

might change your math a bit :)

we damned engineers are detail people

1024 - true ;)

No buffer underuns
 

The main rulz:



Don't have the CD Writer on the same channel as your source file. i.e have Hard drive on Primary master and nothing on slave, have writer on Secondary master and anything that u won't be using much if any on Secondary Slave

Reboot with blank CDR in writer, all other CDROM's empty, as soon as windows loads wait until it settles and then
launch writing software, write from compiled image file.

If you have any software that auto runs when windows starts, you should stop them by cutting them from the
start-up folder and pasting elsewhere.


Advanced rule, you can always try changing your system.ini VCACHE so that the system does'nt waste ram on junk file cache instead of CDROM cache.

its a good 1 time fix.

Huh?
 

Don't have the CD Writer on the same channel as your source file. i.e have Hard
drive on Primary master and nothing on slave, have writer on Secondary master
and anything that u won't be using much if any on Secondary Slave

Reboot with blank CDR in writer, all other CDROM's empty, as soon as windows
loads wait until it settles and then
launch writing software, write from compiled image file.


Huh?

Anyone care to explain?

channel as in IDE cable, which are the things inside that you plug into your writers and hard drive to make sure they all communicate with your mobo. be specific about what you dont get please ;)