cdburner no full speed

blueworm · l33t Joined: 09 May 2003 Posts: 962

cdburner works but does not hit 40x
only records at 16x
in mandrake 9.0 it worked for a few months but then it stopped working i dont remember if it was me that srewed it up or not!

anyhow now using gentoo and it still only records at 16x

I remember that to get it to run at 40x i had to activate dma using hdparm -d1 /dev/hdc
but now it wont let me says: /dev/hdc no such file or directory.

ok I read that this is because of devfs

i looked in /proc/ide/hdc/settings and dma seems to be activated.

whilst looking in /dev I found a device called /dev/hdc-
what is this? hdparm works on this dev but has no effect on my cdrw speed.

Is it possible that the cdburner has become defective?

cchapman · Guru Joined: 16 Jan 2003 Posts: 440 Location: Fremont, NE

Have you looked at the startup scritps. There is a startup script to enable hdparm on all devices. add that to default and all should be good.

hook · Posted: Wed May 21, 2003 6:03 am Post subject:

i get the same "error" in k3b ...but when i look at the time it took for the CD to burn ...it's ok ... a little less than 7 minutes on 32x
_________________
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blueworm · l33t Joined: 09 May 2003 Posts: 962

The problem is that I cant make any changes using hdparm because it comes up:-

kormoc · Apprentice Joined: 17 Jun 2002 Posts: 250

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blueworm · l33t Joined: 09 May 2003 Posts: 962

Thanks for quick reply
Is there any other way of setting DMA to a scsi emulated drive?
I think hdparm only has experimental scsi support.
I tried

kormoc · Apprentice Joined: 17 Jun 2002 Posts: 250

Deleted

kormoc · Apprentice Joined: 17 Jun 2002 Posts: 250

Deleted

blueworm · l33t Joined: 09 May 2003 Posts: 962

Thanks a lot for your help and time I really apreciate it mate.

klarnox · Posted: Thu Jun 19, 2003 4:25 pm Post subject:

Not to go off in a completely different direction, but do the CDs you're using support burning at higher than 16X? I've had problems in the past where the drive wouldn't burn as fast as I knew it could and found this was my problem.

Of course I could be way off here, but I just thought I would throw it out there for you.

blueworm · l33t Joined: 09 May 2003 Posts: 962

Yes I am aware of the cdr issue her I am using 48x woxter cd's
Thes are the same one's that I used to use when the damm cdrw worked under mandrake.(before it stoped working for no reason)
experimenting earlier I turned of the dma in the proc and performance was worse.
I am begining to think that the cdrw does'nt spin fast enough some kind of mechanical error.
I am gonna try benchmarking data transfer to see what I come up with.

blueworm · l33t Joined: 09 May 2003 Posts: 962

Yes I am aware of the cdr issue her I am using 48x woxter cd's
Thes are the same one's that I used to use when the damm cdrw worked under mandrake.(before it stoped working for no reason)
experimenting earlier I turned of the dma in the proc and performance was worse.
I am begining to think that the cdrw does'nt spin fast enough some kind of mechanical error.
I am gonna try benchmarking data transfer to see what I come up with.
Nothing data transfer 67Mb to harddisk 16 seconds from cdrw to harddrive on other ide bus(hda)
data transfer 67Mb to harddisk 16 seconds from dvd to hardrive on other ide bus(hdd)
both cdrw and dvd are 40x read speed for data and well they seem to concur.

UPDATE I have made further tests.
My normal setup is as follows :- hda = harddrive
hdb = dvd
hdc = cdrw
hdd = harddrive
All ide devices are connected using 80 pin ATA66 cables and configured using Cable Select.
This configuration is perfectly valid and in fact works perfectly apart from the fact that it only records at x16. (once upon a time it did record at x40 with this exact same configuration)
Any how I tried the following variations.

both hardrives on bus0, with both opticals on bus1
still connected with 80pin cable and CS

both hardrives on bus0, cdrw alone on bus1
still connected with 80pin cable and CS

both hardrives on bus0, cdrw slv, dvd mas on bus1
connected 40pin ata 33 cable.

At this point I am wiling to stipulate that the results are gonna be the same in any valid config.
Next step try cdrw in wife's pc under windoze.

blueworm · l33t Joined: 09 May 2003 Posts: 962

VICTORY AT LAST!!!!!
flashed the firmware of the cdrw
As every day passed I was becoming more conviced that it was the recorder that was screwy.
I asked a friend whom has a computer store and he said it was "normal" that cdrw sometimes screwed up and that I should flash the firmware.
It was him that introduced me to linux and I am very greatfull.
He is now downloading Gentoo.

Gibberx · Apprentice Joined: 20 Oct 2002 Posts: 217 Location: UMBC

I've got a similar problem, I need to flash my cd burner to make it go at 48x instead of 24x, but the tools are DOS executables... did you have to make a boot disk or anything?

Toke · n00b Joined: 21 Jun 2003 Posts: 15 Location: Denver, CO

I was having similar issues, my new 52x CD-r was only burning at 32x. It's Secondary Slave, and my DVD-Rom is Secondary Master. I had hdd=ide-scsi in grub.conf. I added hdc=ide-scsi and then it would go full speed. But then I couldn't play DVD's. I changed it to read hdd=scsi hdc=scsi and all is well.

johnny5 · n00b Joined: 10 Jun 2003 Posts: 17

was this a firmware upgrade or just a reflash of the firmware that was already on the drive??

blueworm · l33t Joined: 09 May 2003 Posts: 962