Truth about ATA 100/66 with ATA 33???

[Junger]

I was told by few that you shouldn’t have an ATA 100 or ATA 66 device on the same cable with a slower ATA 33 device (like CD ROM), PIO, etc... Is there any truth to that advice? I have tested the combo and found no problems what so ever.

[golfcart]

Won't do any damage. They just all operate at the speed of the slowest drive.

[Fingers]

The IDE controllers on most modern motherboards are able to detect the mode of the device and switch modes on the fly.

Can I mix Ultra ATA/33 and Ultra ATA/66 drives on the same cable?

Yes, a legacy ATA specification drive can coexist with an Ultra ATA/66 drive, and both devices can attain their maximum performance. However, for the Ultra ATA/66 device to attain Ultra DMA 4 mode, an Ultra ATA/66 capable cable is required. - Seagate FAQ (http://www.seagate.com/support/kb/disc/ultra_ata_66.html#8)

[golfcart]

Thank you Fingers, I was, up until now, unaware of that http://www.sysopt.com/forum/smile.gif

[araaraara]

What if I mix a PIO Mode4 drive with a DMA Mode2 drive(both 16.6mb/sec). Does that affect the speed of either drive?

[NDD]

Nop http://www.sysopt.com/forum/smile.gif

Best Regards ...