www.tomshardware.com has a review of 6 ATA-66 harddisks, you can have a look the result.  I have only seen few old IDE (less than 1G) drives which won't work with new drives, you should not worry about this compatibility issue.

Jun Qian

Gerry Coburn wrote:

> Hello Listers
>
> Currently I have two eide Maxtor hard drives installed, giving me a capacity of approx 20Gb. Both of these run as udma 33's.at 5200r.p.m. I want to upgrade to a faster hard drive(s)- ie 7200 - and wonder if anyone has any recommendations.
>
> I want something of the same or greater capacity which can utilise UDMA66 and perhaps allow me to continue using the Maxtors. I understand that some hard drives of particular manufacture do not co-exist happily with other manufacturers products. Can anyone verify this?

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