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Old December 17th 17, 02:01 PM posted to microsoft.public.win98.gen_discussion,microsoft.public.windowsxp.general
J. P. Gilliver (John)[_2_]
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Posts: 54
Default New HDD, has corrupted Data - AGAIN

In message ,
writes:
On Sun, 17 Dec 2017 06:57:37 +0000, "J. P. Gilliver (John)"
wrote:

[]
Yep, it looks like the old drive was set to SLAVE. However, I just
changed the new one to CS and copied a bunch of stuff to it from my
first drive. Then I deleted some stuff and copied a whole bunch of small
clipart pics to it, and then deleted some of them, and after that I
copied a huge ISO file to it, which is almost 1gb in size.

After all of that, I defragged that drive with no problem. It appears
that it needs to be set to CS. Maybe that was the whole problem. I'll
copy more stuff to it and delete other stuff and see if it keeps working
properly now. So far, so good!


I hesitate to ask, but when you say "the old drive" above, do you mean
the CD drive that failed years ago, or do you mean the HD-that-was-G/H/I
whose failure started this whole saga? If the latter, I wonder if
setting that to CS might have cured the original problem )-:!

I ma tempted to try the actual Master and Slave settings with the
jumpers and see if that works. I dont know if one way is better than the
other, or not? Does anyone know which jumper setting is the best?


Does anyone know whether using master/slave jumpering with a cable on
which CS works might cause problems?

I never understood how that CS works, or why it's even an option. Older

[]
If the cable truly has the same connections on all three connectors,
then I can't see how it's selecting either. I know floppy drive cables
had a twist in the cable.

Yep, floppy cables do have a twist, but not these IDE Hard drive cables.
So how that CS works is beyond my comprehension. I do know that for


Maybe there's an internal break in one line - so the cable from the mobo
to the first connector is 80 way, but between them is 79 or 78 way? (I
take it there's nothing obvious like one of the connectors having one of
its holes blanked.)

Ah, I've just looked:
https://en.wikipedia.org/wiki/Parallel_ATA#Cable_select says it is done
using pin 28 - often just by omitting the contact from the middle
(slave, grey) connector, so you'd have to look extremely hard to see it!
It also says line 28 is only used so the drives know which they are, not
for control by the mobo, so if the drives are jumpered as master and
slave anyway, it is ignored (and that doesn't have to be master at the
end). So you can try it if you want. When the controller says "master
drive, please respond", both drives receive the command, but only one of
them responds - either because it is jumpered as master, or because both
are jumpered as CS and one of them knows it is master. (Apparently also
"drive 0" and "drive 1" - apparently "master" and "slave" don't actually
appear in the specification.) Which does suggest that having one drive
"hard jumpered" and the other as CS _could_ cause problems, depending on
position on the cable.

awhile I had the Master drive on the first connector and Slave on the
last connector. THAT IS WRONG, but it was that way for a year or more
and worked fine. Maybe it dont much matter which cable comes first, but
according to several articles, the last connector goes to the first
drive (which seems backwards).

No, as the article explains, if you only have one drive, and it was
connected to the middle connector, you'd have an unterminated stub of
cable, which isn't good electrically (reflections and so on). Apparently
for the 40 as opposed to 80 cables that _was_ the case, as they just
left out line 28 to the second connector (i. e. master was on the middle
connector).
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

Veni, Vidi, Vomit (I came, I saw, I was ill) - , 1998