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How to force ATA100?

I have an IBM DTLA HDD on an EPoX 8KHA+ board. In the BIOS, I've set the drive to always boot at UDMA100, and using the IBM Feature Tool, I've confirmed that this drive is indeed capable of it and is set to default to ATA100. However, the BIOS always runs the drive at ATA33 (as seen from the BIOS load screen, where it says "LBA, ATA33, 41.1GB"). Is there anything else that could be forcing the drive to run slowly, and is there anything else I can do to force it to 100?
 
You're using a ATA 100 cable aren't you? There is also the posiblity that the jumpers on the HDD is not set to use UDMA. Does it show on the boot-up that it is configured for UDMA 100 or is it in your OS?
 
Did not know there was a separate cable required for ATA100 🙂 Learn something new every day.

Now I see that the cable that came with the board has a white piece of paper that says ULTRA ATA CABLE on it. I've got in on my CD drives. Duh.

Thx.
 
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