On Mon, 24 Jul 2006 17:10:37 +0200, "Volker A. Brandt" <vab@bb-c.de> wrote:
>> I have a dmesg (from an U10 running 3.0_BETA) saying:
>> wd0 at atabus0 drive 0: <ST320420A>
>> wd0: drive supports 16-sector PIO transfers, LBA addressing
>> wd0: 19458 MB, 39535 cyl, 16 head, 63 sec, 512 bytes/sect x 39851760
> sectors
>> wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 4 (Ultra/66)
>> wd0(cmdide0:0:0): using PIO mode 4, DMA mode 2 (using DMA)
>>
>> and an Ultra5, running 3.0_STABLE saying:
>> wd0 at atabus0 drive 0: <ST39140A>
>> wd0: drive supports 16-sector PIO transfers, LBA addressing
>> wd0: 8693 MB, 17662 cyl, 16 head, 63 sec, 512 bytes/sect x 17803440
> sectors
>> wd0: drive supports PIO mode 4, DMA mode 2, Ultra-DMA mode 2 (Ultra/33)
>> wd0(cmdide0:0:0): using PIO mode 4, DMA mode 2 (using DMA)
> 
> If I am not mistaken, these are just the capabilities the *drive* reports.
> 
> The "using" line is the important one, and you can see that the
> IDE chip in the Ultra5/10 does not support UDMA at all.
> 

ok - so I'll only get a 440Mhz CPU to upgrade my 333MHz Ultra5.

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