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80 wire vs 40 wire cable for ATA33

Muse

Muse

Lifer
My IDETool tells me that my Pioneer 106s DVD is capable of UDMA Mode 4, but I've been unable to get over UDMA Mode 2. It also tells me that my Liteon 24202B CDR/CDRW can achieve UDMA Mode 2 but I can't get it to take beyond Multiword Mode 2. I figure that maybe I'll get better results if I swap out my 40 wire cables for 80 wire ATA100 cables. My HDs are on a Promise TX2 ATA100 IDE controller, and my config is:

Motherboard primary master: Pioneer DVD

Motherboard secondary master: Liteon 24102B CDR

Motherboard secondary slave: Iomega 250 MB Zipdrive

I have the jumpers set on all these devices in accordance with the above configuration. I just swapped the 40 wire cable on the Pioneer DVD for an 80 wire ATA100 cable, but my Windows 2000 isn't seeing the device. Do I have to change the setting on the drive to Cable Select, or do I not have my cable plugged into the MB or DVD right? Any help, info, suggestions appreciated.
 
I went and switched the Pioneer DVD to Cable Select from Master with the jumper but Win2000 Pro SP2 still doesn't see the drive. It's seen fine in DOS and Win98SE (I'm multibooting) also sees it fine, just like it did. Why does Win2000 not see the drive and what do I have to do? Swap back the 40 wire cable? It shouldn't be necessary to use a 40 wire cable with the drive, right? :Q
 
OK, so maybe I'm missing something here... why do you want to use ATA100 cables on a cdrom/dvd/cdrw/zip drive when those drives cannot transfer data that fast anyways.

Also, I've noticed that the pins/holes on ATA100 cable are different to the ones on a ATA33 ca

Don't most non-harddrives only transfer data at about 5 megs a sec give or take a few megabytes?

If you're worried about cpu usage.. I don't know how much less cpu usage will occur if you were to move from UDMA2 to UDMA4?

I hope I'm saying stuff that helps you.

Mer.
 


<< OK, so maybe I'm missing something here... why do you want to use ATA100 cables on a cdrom/dvd/cdrw/zip drive when those drives cannot transfer data that fast anyways.

Also, I've noticed that the pins/holes on ATA100 cable are different to the ones on a ATA33 ca

Don't most non-harddrives only transfer data at about 5 megs a sec give or take a few megabytes?

If you're worried about cpu usage.. I don't know how much less cpu usage will occur if you were to move from UDMA2 to UDMA4?

I hope I'm saying stuff that helps you.

Mer. >>

I'm not worried about it and maybe I shouldn't have bothered. I just thought I'd maybe get a noticeable performance boost, maybe throughput, if I could boost the DVD from UDMA2 to UDMA4 or the CDRW drive from Multiboot DMA 2 to UDMA 2. My Win98 is seeing the DVD player, but somehow the Win2000 has lost site of it. I could put the 40 wire cable back in and presumably the drive would again show up in Win2000. If I can find no other way, there's nothing else to do.
 


<< OK, so maybe I'm missing something here... why do you want to use ATA100 cables on a cdrom/dvd/cdrw/zip drive when those drives cannot transfer data that fast anyways. >>



Actually you're wrong. There are some newer CD-ROM/DVD-ROM drives that support ATA66 (UDMA Mode 4)...of course to get that speed you'd need the 80-conductor IDE cables, which work for ATA66/100/133. Using 40-conductor cables will relegate those new drives to ATA33 operation.
 


<<

<< OK, so maybe I'm missing something here... why do you want to use ATA100 cables on a cdrom/dvd/cdrw/zip drive when those drives cannot transfer data that fast anyways. >>



Actually you're wrong. There are some newer CD-ROM/DVD-ROM drives that support ATA66 (UDMA Mode 4)...of course to get that speed you'd need the 80-conductor IDE cables, which work for ATA66/100/133. Using 40-conductor cables will relegate those new drives to ATA33 operation. >>

Yes! and my DVD drive is shown in IDETool as capable of UDMA Mode 4 but it's only getting UDMA Mode 2. For some reason my Windows 2000 Pro SP2 can no longer see the drive now that I switched out the 40 wire cable for an ATA100 80 wire cable. My Win98 sees it fine. Anyone have a suggestion? Thanks.
 
these cables are terminated so you must pit the blue plug in the mobo, and if you slave anything to this cable the whole channel will run at the speed of the slowest device
 


<< these cables are terminated so you must pit the blue plug in the mobo, and if you slave anything to this cable the whole channel will run at the speed of the slowest device >>

I have the cable right. The problem resolved when I went into IDETool in Win2k and was surprised to see the drive there. Win2k couldn't see the drive - nowhere I looked. I changed the setting from UDMA Mode 2 to UDMA Mode 4 in IDETool, committed the change and rebooted and then Win2k saw the drive and what's better, the UDMA Mode 4 stuck. Now If I can get my ATA33 drives to stick that would be great. I'll try the 80 wire cables and see what happens.
 
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