Member Avatar for bobroberts

I just changed my power supply and when I boot it says till i use 40 conductors wire and not 80 cond. w. it will be switching from d2 to ultra33 mode what does it mean and what should I do

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Short version for : the BIOS message means the IDE channel detected a 40‑conductor (old) ribbon cable and is forcing the interface down to Ultra‑DMA/33 (ATA‑33). To run at ATA‑66/100/133 you must use a 40‑pin, 80‑conductor cable; otherwise the controller will automatically throttle to the slower mode. UDMA overview. (en.wikipedia.org)

Why that happens: 80‑wire cables add ground wires and a cable‑ID signal (CBLID/PDIAG) that controllers use to detect safe cable capability. If that pin/grounding isn’t present the BIOS or a Promise-style controller prints a warning and downgrades the channel to Ultra‑33 — exactly the behavior noted in similar Promise BIOS messages. See the BIOS cable‑detection discussion and examples. (techarp.com)

What to do (practical checklist):

  • Replace the IDE ribbon with a proper 80‑conductor (40‑pin/80‑wire) cable — it’s inexpensive and fixes this in most cases. Use the color coding: blue = motherboard/controller, gray = middle (slave), black = end (master).
  • Verify jumpers: master/slave or cable‑select must match the cable position.
  • In BIOS leave ATAPI/80‑pin cable detection on (Host & Device) or Auto if available.
  • In Windows XP open Device Manager → IDE ATA/ATAPI controllers → Primary/Secondary channel → Advanced settings and set Transfer Mode to “DMA if available”, then reboot. Also install the proper Promise/chipset drivers for full UDMA support. (allpinouts.org)

About the BIOS concern raised by : if you really suspect someone altered BIOS settings, reset CMOS (jumper or remove battery briefly) and recheck settings. Don’t reflashed the BIOS unless you confirm corruption and use the official vendor image. Credit to and for the DMA/cable clarification — swap the cable first, then follow the checklist.

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Member Avatar for )BIG"B"Affleck
  • Sounds weird first thing that comes to my mind is bios failure(just thinking out loud )
  • Is this a suse box I mean linux post some of your computer specs pls? (kernel)
  • Did you put in anything else new in like IDE cables?(just curious)
Member Avatar for feigned

I just changed my power supply and when I boot it says till i use 40 conductors wire and not 80 cond. w. it will be switching from d2 to ultra33 mode what does it mean and what should I do

Some BIOS'es can detect what kind of wire you're using.

Though, 40-pin cables are capable of running ATA-33 spec...80-wire is what they introduced for ATA-66.

d2...are you sure you don't mean DMA Mode 2?

Member Avatar for bobroberts

the guys is mad at me so he fucked my bios... is that what you mean

Member Avatar for bobroberts

Asus A7V-133 (IDE Ports 4 x UltraDMA/100 (PromiseR ATA-100) )

thunderbird 1,2g
512meg ram 133

Member Avatar for )BIG"B"Affleck

the guys is mad at me so he fucked my bios... is that what you mean

That changes everything hold up

Someone was tampering with your bios if so you might can fixed it with your help we need more info to help you

what are you using windows or linux
(Just a suggestion)
check the IDE cables are they yours maybe he messed with them look on the back of your power supply does it have a VOLTAGE/WATTAGE switch ?

Member Avatar for bobroberts

i'm on xp
I install the power supply myself so it must be ok
he also delete a xp boot file but i will be ok with this one
the ide cable seem to be the same but...

Member Avatar for )BIG"B"Affleck

are you using the computer that has problems to post here

Member Avatar for bobroberts

no

Member Avatar for TallCool1

I just changed my power supply and when I boot it says till i use 40 conductors wire and not 80 cond. w. it will be switching from d2 to ultra33 mode what does it mean and what should I do

This is not a bad thing. 80-conductor cables have better signal integrity, and both drives and controllers can sense (by the additional ground wires) that such cables are in use. The d2 reference is not one I'm familiar with, though. Normally, 40-conductor cables will support Ultra-33 mode. Most new hard drives are Ultra-100 or 133, but nearly all CD/DVD drives are still Ultra-33 (a 52X CD drive is still under 8 MB/second data transfer). Still, I use 80-conductor cables for better signal quality, where possible.

Member Avatar for )BIG"B"Affleck

he also delete a xp boot file but i will be ok with this one

How did you find this out from a previous incounter with the guy or today

Good post tallcool

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