Archived from groups: comp.sys.ibm.pc.hardware.storage (
More info?)
Folkert Rienstra <see_reply-to@myweb.nl> wrote in message
news:42b24e98$0$76820$892e7fe2@authen.white.readfreenews.net...
> Rod Speed <rod_speed@yahoo.com> wrote
>> Dave <AskMeIfYouWannit@somewhere.there> wrote
>>> AskMeIfYouWannit@somewhere.there wrote
>>>> Rod Speed <rod_speed@yahoo.com> wrote
>>>>> Rod Speed rod_speed@yahoo.com> wrote
>>>>>> Dave AskMeIfYouWannit@somewhere.there> wrote
>>>>>>> Rod Speed rod_speed@yahoo.com> wrote
>>>>>>>> Dave AskMeIfYouWannit@somewhere.there> wrote
>> > > > > > > > I've installed a new, bigger, hard drive in my system.
>> > > > > > > > Cloned the old drive. I'm using XP. Seems to be
>> > > > > > > > working OK. New drive is a seagate 160 GB.
>> > > > > > >
>> > > > > > > > However, the BIOS will only detect the new drive
>> > > > > > > > when I jumper it as slave. It doesn't seem to like
>> > > > > > > > it jumpered as master. Why would this be ?
>> > > > > > >
>> > > > > > > > By the way, the old drive is unplugged, I'm not going to use
>> > > > > > > > it.
>> > > > > > > > So I thought I should set the new drive up as a master.
>> > > > > > >
>> > > > > > > Is there another drive on the ribbon
>> > > > > > > cable too, likely not from the below.
>> > > > > >
>> > > > > > No other drive, I've got the old drive unplugged for now.
>> > > > > >
>> > > > > > >
>> > > > > > > > As I say, seems to work fine as a slave. Is there
>> > > > > > > > any problem running a single hard drive as a slave ?
>> > > > > > > > Any clues as to why it can't be recognised as a master ?
>> > > > > > >
>> > > > > > > There's three main reasons that you get that result.
>> > > > > > >
>> > > > > > > The most common one is using a modern 80 wire ribbon cable,
>> > > > > > > and using the middle connector for the drive.
>> > > >
>> > > > > > Just tried both connectors a couple of times each, with same
>> > > > > > result.
>> > > >
>> > > > > > > Some motherboards
>> > > > > > > dont handle that very well, basically assuming cable select is
>> > > > > > > used
>> > > > > > > even when the drive is jumpered using the master and slave
>> > > > > > > jumpers.
>> > > > > > >
>> > > > > > > The fix in that situation is to just go with the flow, jumper the
>> > > > > > > drive as cable select, and use the end connector for the drive.
>> > > >
>> > > > > > Cant get that to work.
>> > > >
>> > > > Thats evidence of a bad cable.
>> > >
>> > > Thanks. I'm gonna try a new cable tomorrow and see how that goes.
>>
>> > Well, new cable and it's working as master. BIOS
>> > detected straight away. Using cable select jumpering.
>> Thanks for the feedback, too rare in my opinion.
>> Likely the original cable is bad with the cable
>> select line being the one not making good contact.
> Doesn't explain why the drive didn't want to play while not using CS at all.
Corse it does.
> A CS line not making good contact just gives
> you either M or S, depending on the exact
> moment the drive looks at it at initialization time.
Its more complicated than that.
> After that it doesn't matter.
>> It may well have been that all alone, the little prong
>> things that bite into the ribbon and connect to the
>> wire can get bent when the cable is made.
>>
>> > > > > > > You can also get some odd results if you have an 80 wire
>> > > > > > > cable in backwards, with the end connector thats intended
>> > > > > > > for a drive used in the motherboard connector. The blue
>> > > > > > > connector should be plugged into the motherboard.
>> > > > > >
>> > > > > > Yeah, it is.
>> > > > > >
>> > > > > > >
>> > > > > > > You can also get the result you are seeing with a bad 80 wire
>> > > > > > > ribbon cable.
>> > > > > > >
>> > > > > >
>> > > > > > Yeah maybe that is it then. I've had this cable for over three
>> > > > > > years. In that
>> > > > > > time, with just the one drive on it, the loose end of cable was
>> > > > > > tied with a
>> > > > > > elastic band. And the cable was sort of crimped up, a bit bent here
>> > > > > > and
>> > > > > > there. Could that lead to a damaged cable over time ?
>> > > > >
>> > > > > Its more usually damaged by getting it off the old drive,
>> > > > > pulling on the ribbon itself rather than on the body of
>> > > > > the connector that goes into the drive connector.
>> > > > >
>> > > > > It could always have been bad, one wire not making good
>> > > > > contact, and that has got disturbed with the drive changing,
>> > > > > or the new drive is more fussy about it with master/slave detection.