frank xie wrote:
> Hi!
> I can't install Redhat 6.1 in my Dell PC with a 20.4G Ultra ATA hard
> drive with a ATA 66 controller which is not currently supported. However, it
> is said that it will work if I use the 33Mhz controllers on the card,
> instead of the 66Mhz. But Redhat is not able to help me with this. Can
> somebody provide some detail about this issue? Is the 33Mhz and 66Mhz
> controllers coexist in the same card? Is there any risk doing this? Thanks.
If it's on a card, it should be a Promise Ultra66 card. If the system has
this card, then it also should have fully-functional ATA/33 ports on the
motherboard. The BIOS may need to be configured, but this card uses a
separate IRQ.
So, you can have up to 4 ATA/33-compatible devices off the mainboard,
and I up to 4 additional ATA/66 devices off the card. It may use just one
IRQ for that as well, I don't recall for sure.
Keep in mind that if you add a hard drive to the motherboard's ports,
Windows may see it as your new primary drive. I'm not sure how the Promise
card's BIOS handles that.
-W-
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