SCSI HD

[Teilhard Knight]

I bought, sometime ago, a 36.5 Gig or so HD for an old apple which is
broken. As it is too
old, I thought in using the drive for one of my PCs. Now, the device (HD)
comes with a converter to plug older machines. And I have an SCSI adaptor
(Iomega) in my PC which has a 50 pin connector to plug SCSI internal
devices, the one which used to be called SCSI 1. So, I have plugged
everything without adding any jumpers. The disk doesn't show up either on
the BIOS or in WinXP. I enter the BIOS of the adapter and make a bus scan
and I get: 'no device found'. The HD spins all right, too fast to my taste,
but I have no experience with SCSI HDs, and when the bus scan is in progress
I hear the adaptor accessing the drive. I have tried setting the SCSI ID to
all settings from 0 to 3 and I have tried fiddling with the remaining four
(or three?) jumpers which in the converter are labels only with acronyms I
do not really know what they stand for.

What worries me is that the SCSI adaptor doesn't see the drive. It must be
formatted Apple because I bought it in an Apple computer shop, but even
though the adapter should see it, don't you think? Something like reporting
it found a drive with a funny format or no format at all.

I have spent a good deal of time researching the subject and I only found
one piece of information which might be useful: "enable bus scan", but
looking to the HD itself or the converter, there is no jumper to stop or
allow bus scan. Any suggestions?

Teilhard.

 

[Jim Macklin]

SCSI cables need to be terminated so the connectors are
capped. The drive should be seen if the SCSI adapter is
working, check the BIOS and the device manager see what is
enabled.
You do need jumpers, check the drive maker's web site to see
how to jumper the drive and check Iomega site for the
adapter settings. They should show you the proper way to
terminate the cable with a cap.
http://www.pcguide.com/ref/hdd/if/scsi/cables-c.html


--
The people think the Constitution protects their rights;
But government sees it as an obstacle to be overcome.
some support
http://www.usdoj.gov/olc/secondamendment2.htm



|I bought, sometime ago, a 36.5 Gig or so HD for an old
apple which is
| broken. As it is too
| old, I thought in using the drive for one of my PCs. Now,
the device (HD)
| comes with a converter to plug older machines. And I have
an SCSI adaptor
| (Iomega) in my PC which has a 50 pin connector to plug
SCSI internal
| devices, the one which used to be called SCSI 1. So, I
have plugged
| everything without adding any jumpers. The disk doesn't
show up either on
| the BIOS or in WinXP. I enter the BIOS of the adapter and
make a bus scan
| and I get: 'no device found'. The HD spins all right, too
fast to my taste,
| but I have no experience with SCSI HDs, and when the bus
scan is in progress
| I hear the adaptor accessing the drive. I have tried
setting the SCSI ID to
| all settings from 0 to 3 and I have tried fiddling with
the remaining four
| (or three?) jumpers which in the converter are labels only
with acronyms I
| do not really know what they stand for.
|
| What worries me is that the SCSI adaptor doesn't see the
drive. It must be
| formatted Apple because I bought it in an Apple computer
shop, but even
| though the adapter should see it, don't you think?
Something like reporting
| it found a drive with a funny format or no format at all.
|
| I have spent a good deal of time researching the subject
and I only found
| one piece of information which might be useful: "enable
bus scan", but
| looking to the HD itself or the converter, there is no
jumper to stop or
| allow bus scan. Any suggestions?
|
| Teilhard.
|
|

 

[Teilhard Knight]

SCSI cables need to be terminated so the connectors are
capped. The drive should be seen if the SCSI adapter is
working, check the BIOS and the device manager see what is
enabled.
You do need jumpers, check the drive maker's web site to see
how to jumper the drive and check Iomega site for the
adapter settings. They should show you the proper way to
terminate the cable with a cap.
http://www.pcguide.com/ref/hdd/if/scsi/cables-c.html


--
The people think the Constitution protects their rights;
But government sees it as an obstacle to be overcome.
some support
http://www.usdoj.gov/olc/secondamendment2.htm

My host adapter supports automatic termination. I can see that in its BIOS.
So, I suppose I do not have to cap the SCSI cable separately. I however am
new to SCSI apart from driving an external Iomega removable HD, so, if I am
thinking wrong, please let me know. Thanks for your feedback.

Teilhard.

 

[Jim Macklin]

I just know what I have read. I'm fairly sure the drive
needs to be set as a slave with a jumper, you'll need to
check the label on the drive and see the maker's web site
for the details. Windows XP disk management should allow
you to format the drive once the disk shows. Yes, if the
cable you have supports auto termination, you don't need to
do it again.


in message
| | > SCSI cables need to be terminated so the connectors are
| > capped. The drive should be seen if the SCSI adapter is
| > working, check the BIOS and the device manager see what
is
| > enabled.
| > You do need jumpers, check the drive maker's web site to
see
| > how to jumper the drive and check Iomega site for the
| > adapter settings. They should show you the proper way
to
| > terminate the cable with a cap.
| > http://www.pcguide.com/ref/hdd/if/scsi/cables-c.html
| >
| >
| > --
| > The people think the Constitution protects their rights;
| > But government sees it as an obstacle to be overcome.
| > some support
| > http://www.usdoj.gov/olc/secondamendment2.htm
|
|
| My host adapter supports automatic termination. I can see
that in its BIOS.
| So, I suppose I do not have to cap the SCSI cable
separately. I however am
| new to SCSI apart from driving an external Iomega
removable HD, so, if I am
| thinking wrong, please let me know. Thanks for your
feedback.
|
| Teilhard.
|
|

 

[Jonny]

Slave in scsi?

 

[Teilhard Knight]

Slave in scsi?

Right. As far as I know there is no such thing as a master and a slave
drives in SCSI. You form chains with them.

 

[Bob I]

the "automatic" is only the adapter end of the chain. The "device end"
still needs to be properly configured. Either put a terminated device on
the end of the cable OR install a terminator on the end of the cable.

 

[Teilhard Knight]

the "automatic" is only the adapter end of the chain. The "device end"
still needs to be properly configured. Either put a terminated device on
the end of the cable OR install a terminator on the end of the cable.

Thank you. Just give me a hint of how to terminate the HD. With jumpers? (I
do not have a terminator). I am not asking you to tell me which pins to put
the jumpers into, but rather a hint of how it is done and I'll find my way.

Teilhard.

 

[Bob I]

You will need to look up the documentation for the particular drive in
question. Visit the manufacturers web site and pull up the drive model
and get the setup page. it should provide the jumper/dip setting for
termination and SCSI ID numbering. (I think all the drives with
terminator packs are gone )

 

[Jonny]

Right. The original configuration of this scsi drive was external. So, the
external scsi cable probably had a terminator on it. Now, he's moved the
hard drive to internal. So, it needs some form of termination.

Lots of scsi basics at adaptec.com and similar sites. Takes some reading to
understand all.