Ron Martell enlightened us 24hoursupport.helpdesk-(ab)users with:
.....
> If the drives are properly jumpered then cable position does not
> matter. I have, on occasion, configured computers with a hard drive
> at either end of the IDE cable and with the middle connector plugged
> into the motherboard. No problems.
>
Uhm. That looks like asking for trouble.
Well, on some really old computer, without UDMA or at least <=UDMA33,
you may be lucky with such a setup.
BUT with UDMA100 or 133, you will get reflections, resulting in reduced
transfer rates, maybe auto-shutoff of (u)dma features or even data
corruption.
Never let a 80wire PATA cable tail hang loose - the end connector must
always have a drive attached first, _then_ the middle connector.
On some occasion I even noticed corruption resulting in "ntldr missing"
or the system part of registry hive corrupted, just when master was
attached to middle and slave at the end, with udma133. After swapping,
everything went smooth ...
> A couple of caveats:
> 1. Some hard drives use different jumper positions for "master drive
> with slave present" and for "stand alone master drive" so you need to
> double-check the jumper specifications for the master drive when you
> add a slave.
> 2. Sometimes two drives will just not work together as master &
> slave. This is most likely to be encountered when the two drives are
> from different manufacturers and where the drive manufacturing dates
> are more than 3 years apart. The last time I encountered this it was
> with a new Western Digital drive as master and a 5 year old Maxtor as
> slave, but it sometimes happens with other brands as well.
>
Good points

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