Re: Drive shows up as PIO mode only

From: Luis ORTEGA (lortega_at_ntlworld.com)
Date: 10/30/04


Date: Sat, 30 Oct 2004 21:37:57 GMT

Thanks a lot Wes.
I printed out the articles and will do this first thing on Monday.
I will report back on it.

"Wesley Vogel" <123WVogel955@comcast.net> wrote in message
news:#9QSmWsvEHA.2536@TK2MSFTNGP10.phx.gbl...
> DMA Reverts to PIO
> http://www.michna.com/kb/WxDMA.htm
>
> --
> Hope this helps. Let us know.
> Wes
>
> In news:vxRgd.538$9t2.274@newsfe5-win.ntli.net,
> Luis ORTEGA <lortega@ntlworld.com> hunted and pecked:
> > I'm trying to find out what could be going wrong with my drive setup.
> > I just put together another computer from various parts, all of which
> > worked OK before.
> > But the 30 GB drive on the secondary master will only list as PIO
> > mode in the device manager.
> > I used a QDI mainboard that had previously handled 40 and 60 GB
> > drives in ultra dma modes.
> > I have a 20 GB C drive and a CD drive on the primary controller and
> > both show up as dma drives (ultra dma mode 5 and multi-word dma mode
> > 2)and have only the 30 GB drive as the master on the secondary
> > controller, which I want to use for video, but if it only shows up as
> > a PIO mode drive, I know it won't be able to handle it.
> > It's a windows XP home with SP1 setup and I have not yet installed any
> > software (just built it today) until I get the drive problem worked
> > out. The drive is the only component that I haven't used before since
> > it came from the IT department at my school, but it's a 30 GB maxtor
> > and it's unlikely that any 30 GB drive could be so ancient that it
> > wasn't dma.
> > The motherboard has a VIA chipset and I installed the latest Hyperion
> > drivers just in case that it was the culprit, but that made no
> > difference, and anyway, the other drives on the primary controller
> > were being recognized as ultra dma already.
> > The cable is an 80 pin ultra dma cable.
> > I just can't figure out what could be causing it to see the drive as
> > PIO mode only.
> > I've built many computers before, so I'm not new at this. I tried
> > changing some options in the bios but nothing has made any difference.
> > I have a little 6 GB drive at home that I will bring in to try on the
> > controller on Monday just to check if it's the 30 GB drive at fault,
> > but I would appreciate it if anyone can please give me some advice or
> > suggestions to try.
> > Thanks a lot.



Relevant Pages

  • [git patches] IDE updates
    ... enable DMA for all ATAPI devices ... it821x: PIO mode setup fixes ... * for a drive into the cmd646 chipset registers to active them. ... + * This routine selects drive's best PIO mode and writes into the chipset ...
    (Linux-Kernel)
  • Re: Presario V5000 crawling & wont system restore
    ... reason why it is in PIO mode. ... DMA capabilities on boot (as long as you've got "DMA if available" ... etc. until it falls all the way down to PIO mode. ... longer match the info reported by the drive, forcing Windows to reset ...
    (comp.sys.laptops)
  • Re: dma mode vs. pio mode
    ... DMA Reverts to PIO ... MS-MVP Windows Shell/User ... Western Digital 40 GB and 80GB drives installed on Primary Controller. ...
    (microsoft.public.windowsxp.general)
  • Re: Disable DMA
    ... If I uninstall the program that needed it, will this turn DMA off again? ... Then change the Drives for DMA to PIO. ... PIO is the acronym for Programmed Input Output. ...
    (microsoft.public.windowsxp.help_and_support)
  • Re: DMA mode
    ... First, the current transfer rate ... may be at DMA 5, but the maximum is DMA 6. ... PIO Mode since they are capable of much more data throughput. ... What exactly are your optical drives? ...
    (microsoft.public.windowsxp.hardware)