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On Donnerstag 18 Februar 2010, walt wrote: |
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> On 02/18/2010 01:57 PM, Mick wrote: |
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> > On Thursday 18 February 2010 14:33:38 James wrote: |
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> >> Should I put the drive into udma4 mode? |
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> >> |
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> >> If so, wouldn't I use: |
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> >> |
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> >> hdparm -d 1 -X 68 /dev/hda |
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> > |
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> > According to the hitachi manual (who made this drive for IBM) the |
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> > DJNA-3XXXXX series has a Ultra ATA Mode 2 (33.3 MB per second) |
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> > capability. So the kernel is not lying in this case and you can trust |
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> > hdparm in what it shows. I suggest you leave alone. |
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> |
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> Shouldn't the drive just refuse any command that it can't do? |
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udma4 has not additional commands. It is just faster. And no, some drivers |
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don't. With desastrous results. |
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Don't set the udma mode. |
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Ever. |
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