Dual CD

[CajunMan]

Recently installed A7V266-C. My system has a CD burner which show as a Mode 4 and a CD reader which shows as a UDMA 2. When I boot with both devices connected I get the yellow error check in Device Manager, Seconday Bus Master IDE, plus neither CDROM show up in Device Manager

[BipolarBill]

Are the drives jumpered correctly on a healthy cable with no pins bent anywhere?

Look at the back of the CDR. It should be UDMA2 also. Are there other "special purpose" jumpers back there? If so, try another position.

[Midknyte]

First try each drive by themselves. If they both work alone, then you know it's a configuration problem.

Make sure your jumpers are set properly, like Bill said. :D

[CajunMan]

Ribbon cable is new one. NO bent wires. CDR is jumped as slave and CDRW as master. Have booted with only one connected and all was ok, but when both are connected everything not ok.
Both devices worked fine with previous MB A7V133!! Should both devices be recognized as Mode 4 and/or udma 2??

[Midknyte]

Try setting your bios to "None" instead of "Auto" for Secondary IDE. It depends on how old your hardware is if they use UDMA or not.

[otheos]

If either is PIO then the whole bus will stick to PIO and maybe this is why you get the !

The only reason CDRW went to UDMA2 was for compatibilty, but unfortunately it took some time before they did, and many CDRW are still PIO only.

[CajunMan]

Problem resolved, changed bios for Secondard Master to CDROM and Secondard Slave to NONE. All devices present and working!! No ! errors in device manager.

Thanks for your help

[BipolarBill]

Weird. Truly weird. When you get a chance, try both as "None". That's the recommended setup anyway.

[CajunMan]

I did change both to NONE and it worked, but I then saw I could change Secondary Master & Slave to CD ROM, so I tried that, but both set to CD ROM did not work, I did not recognice the Slave, so I set Slave to NONE and everything appears to be ok.

Again thanks for help!!

[CajunMan]

I'm back, I have 2 hard drives connected on the Primary ribbon. what I did not notice when I connected both CDR and CDRW as NONE was that I lost my D drive. I removed the CDR and my D drive has returned. So I am back to only being able to use 1 CD drive on Secondary ribbon.

[BipolarBill]

Both Primary channels need to be set to "Auto" and the drives need to be jumpered correctly.

Both Secondaries should be set to None.

Better would be to connect each HDD as Master on each cable and the CDs as Slaves to the Masters. Don't forget to make both Slaves "None".

[CajunMan]

Will I be able to connect my Alta-100 drive and a CDR on same ribbon? And then connect UDMA-2 drive with the CDRW??
I am not sure that my ribbons are long enough to reach, but will give it a try

Thanks

[BipolarBill]

You can put the slaves at the end of the cable as long as you don't use CS (cable select).

[CajunMan]

I did as you suggested, made HDDs the Master and the CDs the Slaves, Bios settings - Masters = AUTO; Slaves = NONE. This appears to be working.

How can I tell that my UltraDMA-100 is actually functioning as UltraDMA-100??

Thanks again

[BipolarBill]

If you set the drive (in Win9x) or IDE controller (Win2K/XP) to DMA, you have it. You can also use the appropriate drive utility (W-D, Maxtor, Seagate) to diagnose ATA from a floppy.