Quick Harddrive question

[Helevitia]

Can I plug an ATA100 drive into an ATA66 controller without any problems? And to be a little more general, are all drives backwards compatible with older controllers?

Thanks,

Dave

[dZeus]

I've got 2 UDMA/100 drives running on an ATA/33 interface on a motherboard with a BIOS that can't detect any drive larger than 30GB (both are larger)

[Helevitia]

Cool, that pretty much answers my question then. I think I've hooked up an ATA66 drive to an ATA33 controller but I couldn't remember for sure.

Thanks!

Dave

[Jammrock]

Ditto. Haven't had any troubles putting ATA-100 on ATA-66 channels.

Jammrock

[SteveC]

...although it might be worthwhile downloading the appropriate manufacturer's tool to set the drive UDMA mode to the correct setting.

[Gurm]

Might not, too.

A lot of noise was made about lack o' backwards compatibility, but I have never ever had a problem. *shrug*

- Gurm

[Jon P. Inghram]

I'm running a UDMA/100 drive on my CUBX's UDMA/66 controller just fine (and at UDMA/100 too, via the wonderfull world of hidden hardware capabilities! )

[Patrick]

In case you weren't aware...

Jon, if you upgrade the BIOS on your CUBX, you'll find that the CMD controller now runs at UDMA/100.

Or is that what you've already done?

[High_Jumbllama]

Ultra 133s 127MB+

Ultra 133 drives should work as long as they are not above 127GB. Even if they are, they just work at 127GB.

[Jon P. Inghram]

Yep, got the latest BIOS for the board. Nice when a simple software upgrade makes something like that run faster. Not that the HD's really fast enough to run any different from UDMA/66 to UDMA/100...