On 10/23/07 3:55 AM, in article h5arh3lte60u1c9881gn66rfq69iboiu02@4ax.com,
"kony" <spam@spam.com> wrote:

> On Tue, 23 Oct 2007 00:55:25 -0000, RedPenguin
> <ZeroOneTwoThree@gmail.com> wrote:
>
>> I have two 10gb hard drives, it's weird.
>>
>> Both hard drives work, but when I just put in one of then, my Compaq
>> Deskpro says Disk Controller Failure (Yes it's set to master/single),
>> but both together it works for some reason. Also any other hard drive
>> but these two works fine.
>>
>> How on Earth can two PATA hard drives work together but not alone? I
>> have the jumper settings correct. These drives always work fine as
>> slaves, when tested with known working fine hard drives.
>
>
> You didn't provide detail of drive controller or drive
> make/model. This is crucial since you have only described
> what works ok for everyone else.
>
> I suspect cables or jumpers. Keep in mind some drives have
> a separate single vs master jumper setting.

In the older days (back in the 1 to 4 gb range of drives) I used to have two
hard drives that refused to work together. Seems there were some
incompatibilities between the two makes (WD Caviar and a Seagate model of
some kind).