100% cpu usage when copying off cd..

pamf

Senior member
Dec 11, 2000
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ok heres the problem.. im sure this is just one symptom of a somewhat larger problem. i just tried copying a bunch of files off a cdrw onto my hd..

the hd is primary master, ultra dma mode 5, with a 52x on primary slave, pio only. i have a burner on secondary master, multi word dma mode 2. i tried copying files off the cdrw onto the hd from the 52x. it was using up 100% cpu trying to copy the files, totally lagging my system, then finally gave me an error. the cd is nearly spotless. even if it WAS having trouble reading it i dont think it should be killing the system in the process.. among other problems, the sound from my sb live was popping and clicking away while attempting this copy..

its a kt7a (via kt133a) .. ive got the latest 4 in 1's (4.37v) ..

any suggestions?
 

Cosmic_Horror

Golden Member
Oct 10, 1999
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I am not 100% sure but i think if you have two ide devices set up as master and slave when one is set to pio mode the other also reverts back to it.. (eg the ide controller works at the slowest setting of the two).

i know if i have two hard drive ata100 and ata33 both revert to ata33.

try removing the 52x cd-rom and see if the problem persists.
 

pamf

Senior member
Dec 11, 2000
307
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if i set the 52x to dma, its like an instant lock up the second i do anything with it, so its going to have to stay on pio either way
same goes for having it on secondary slave.. ;(
 

pamf

Senior member
Dec 11, 2000
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anyone else got any ideas? its just kinda irritating since i have all good components in here and it should be working perfectly ;/
 

GregANDTCH

Golden Member
Dec 10, 2000
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Does it work right if you copy the files using your burner?
Maybe it's your CDRW.
I have some ACER CDRW's that are shi**y.
Half the time they don't read right in a burner,
much less a cd-rom.
Oh-Well:(

I also had a cd-rom go bad, the first symptom was
it quit working in DMA mode. Went downhill after that.
When it malfunctions, it messes with the other drives on the same cable.
 

Bozz

Senior member
Jun 27, 2001
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Its pretty common, many CDROMs do lock the computer up temporarily and keep CPU at 100%

I've had it with many IDE CDROMs and finally went to a Toshiba 32x SCSI and CPU is down at 1% when reading... the 32x CDROM is soooo much faster than 52x IDE CDROMs

Go SCSI, you wont regret it.
 

Xelloss

Senior member
Apr 9, 2001
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Well, other than the price premium you pay for SCSI ;)

Honestly, if the drive only gives you problems with that one disc, I'd blame the cd-rw. Standardization notwithstanding, cd-rw reading on many drives tends to be kind of spotty. I'm not expert on optical media, but as I understand it the wavelength used on cd-rws is substantially different than that on cd-rs, not to mention normal discs. Also, as drives age, I think their lens calibration starts to kind of drift, and cd-rw reading usually seems to be one of the first things to crap out. If you can, try reading it in a different drive. Maybe take it to friend's house or something if necessary. I've had a couple of cs-rws that displayed similar symptoms.

If it's not just that disc, then I'd be inclined to just get another drive. CD-ROM drives just aren't the most durable pieces of equipment in the world. I've found their failure rate to be probably the highest out of any component in most systems. Fortunately, they're not too expensive anymore. Just go to your local Fry's (or equivalent) and pick up another one. Worst case, it won't help and you'll have to take it back.

If it's not the disc or the drive.... well, it's possible your IDE controller is going haywire. That doesn't seem too likely, but I guess it could happen.

--------------------------------------------

Hold up a sec. I just had a thought. Try taking the SB Live! out. I know VIA's fix is supposed to be in all the recent 4in1s and all, but this nasty bug-a-boo might just be your problem. If it's not the cd-rw or the drive, then dollars to donuts it's the sound card. Those things wreak all kinds of havoc on the system bus. If your sound's popping and stuff, I'm even more inclined to say that's the problem. Try taking the card out and see if things improve. If they do, then you probably really need to flash the BIOS. My I-Will KK266 (kt133a) board was totally unreliable when I had my SB Live! in. I took it out and used the onboard sound and it ran flawlessly. After a BIOS flash to the latest version a couple of months ago, I decided to put the Live! back in and it's been running like a champ ever since. No problems at all. Your mileage may vary of course, but the more I think about it, the stronger my feeling that this is your problem.

Quick (well, maybe not :)) word on flashing the BIOS (in case you've never done it.) There are, of course, horror stories all over these forums about BIOS flashes gone awry. I'm sure it happens. But, it's not really very likely just as long as you're very, very careful. (Read: paranoid/anal retentive :roll;). Preferably, use a brand new floppy. If not, at least try to use one that's had a minimum of wear and tear. Whatever the case, run a thorough scandisk check on it before you try flashing from it. Make sure there's no bad sectors lurking in there. You don't want the disk to fail at a crucial moment. Other than that, read the flashing instructions carefully, don't try to flash from windows, etc., etc. Also make double sure of the integrity of the downloaded file (i.e. check the CRCs).

Don't be scared :) It's really not that big a deal. Just be careful and you'll be fine. Good luck!