Re: No UDAM in Seagate
From: Ray (rayyuen_at_nospam.interbaun.com)
Date: 05/29/04
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Date: Sat, 29 May 2004 00:02:33 -0600
"anc" <anc@nospam.net> ¦b¶l¥ó news:40b6220c$0$4593$db0fefd9@news.zen.co.uk
¤¤¼¶¼g...
> Joaquín wrote:
>
> > Hello I have a SuSE 8,1 installed with a disc of 40 GB "Seagate IDE
> > ATA100 7R". A long time ago I realized with Yast that UDMA was
> > inhabilited . I tried to activate it without success. Then I tried
> > with the shell and hdparm (runlevel 1 as suggested) and I was not able
> > either. I give you some information that I have obtained.
> >
> > hdparm -v /dev/hda
> >
> > /dev/hda:
> > multcount = 16 (on)
> > IO_support = 1 (32-bit)
> > unmaskirq = 1 (on)
> > using_dma = 0 (off)
> > keepsettings = 0 (off)
> > readonly = 0 (off)
> > readahead = 8 (on)
> > geometry = 4865/255/63, sectors = 78165360, start = 0
> >
> > Enabling DMA with hdparm -d1 /dev/hda:
> >
> > /dev/hda:
> > setting using_dma to 1 (on)
> > HDIO_SET_DMA failed: Operation not permitted
> > using_dma = 0 (off)
> >
> > /dev/hda:
> >
> > Model=ST340014A, FwRev=3.00, SerialNo=3JX02Q00
> > PIO modes: pio0 pio1 pio2 pio3 pio4
> > DMA modes: mdma0 mdma1 mdma2
> > UDMA modes: udma0 udma1 udma2
> > AdvancedPM=no WriteCache=enabled
> > Drive conforms to: ATA/ATAPI-6 T13 1410D revision 2: 1 2 3 4 5 6
> >
> > Thanks in advance.
>
>
>
> Unfortunately this looks like bad news to me. The fact that your hard
drive
> has not worked with the d1 switch means that your ATA100 hard drive is not
> capable of working in UDMA mode with linux at this time.
> Its not that linux does not support your hardware, but the fact that the
> manufacturer has provided insufficient details about their hardware.
> I also have an ATA100 hard drive an IBM Deskstar. Using -I or -i options
> provides the following info:
>
> orac:/home/anc # hdparm -i /dev/hde
>
> /dev/hde:
>
> Model=IBM-DTLA-307030, FwRev=TX4OA50C, SerialNo=YKDYKGJ1684
> --snip--
> PIO modes: pio0 pio1 pio2 pio3 pio4
> DMA modes: mdma0 mdma1 mdma2
> UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
>
>
> Looking at your information your hard drive will only work at udma mode 2
so
> you will not get the performance you paid for (under linux)........ unless
> someone knows better.
>
I have the problem with ATA 66 HD became an ATA 33. turns out it is a
hardware configuration problem, I connect my CD rom ATA 33 with the HD in a
same cable.
did your POST/BIOS show it is not ATA 100 ? if yes then it is not a linux
problem.
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