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Old 04-08-2004, 02:10 AM   #1
sir_inferno
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Default hard drive jumpers

hi guys...

i just got a new maxtor hard drive and i'm putting it in a computer with a cd rom and an external hard drive rack thing. i presume (can't open the case :-() that they are both on seperate ide cables (otherwise it'd be sooooo slow). So both their jumpers would be on master right?

Well i took out the maxtor and there's a sticked showing postions of the jumpers and what it means. One of them is DS Master, CS Enabled, Cap Limit, and no junper means a slave. And the maxtor came as default on CS Enabled.


could some1 enlighten me on what that means/which one it should be?

thanks

edit

Ahhh, cable select means it auto does it but only on 80 conductor ribbon models :S what kind is that?


edit


The Cap Limit setting automatically sets the drive to a system's maximum size capacity, because many systems cannot run huge drives. :-?
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Old 04-08-2004, 02:27 AM   #2
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Default Re: hard drive jumpers

umm, ok, seeing that ata-133 drives need that 80 conductor thinga-mi-bob to work at all, i think i'll leave it on cable select and it'll be fine...
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Old 04-08-2004, 03:21 AM   #3
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Default Re: hard drive jumpers

Actually the Capacity Limit on drives 99% of the time locks them to 2.1GB, not the machines limit.

It wouldn't matter if the drives were Master, Slave or Cable select if they are on their own cable as they would still work fine, you just have to make sure you never have 2 drives set to the same thing on the same cable. On cable select, the middle connector is Master and the end one is Slave. The machine wouldn't be slower on the same IDE cable, infact you probably would never notice unless it is a very, very old machine that requires both drives to be locked to the same speed on the same cable (and I am talking like 486 era).
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Old 04-08-2004, 03:31 AM   #4
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Default Re: hard drive jumpers

ahhh, thanks dude, you've removed all my worries :-D
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Old 04-08-2004, 04:25 AM   #5
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Default Re: hard drive jumpers

Hi

my opinion and experience is:

If you have a single drive at the cable, jumper it as Master
If you add a second drive to the cable, jumper it as Slave (there are some old drives where the Master-drive has to be jumpered explicitly as "Master with Slave present")

For the cable-select jumper position, you need a special cable where some wires are twisted (somehow simular to a floppy-cable). Never seen such a cable and never seen a drive jumpered as CS. If you experienced that the drives are running even if they are jumpered wrong, you could see how tolerant the modern drives are, nevertheless they are jumpered wrong and may produce unpredictable errors (e.g. bus-hang);-)

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Old 04-08-2004, 08:13 AM   #6
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Default Re: hard drive jumpers

Quote:
Noster wrote:
Hi

my opinion and experience is:

If you have a single drive at the cable, jumper it as Master
If you add a second drive to the cable, jumper it as Slave (there are some old drives where the Master-drive has to be jumpered explicitly as "Master with Slave present")

For the cable-select jumper position, you need a special cable where some wires are twisted (somehow simular to a floppy-cable). Never seen such a cable and never seen a drive jumpered as CS. If you experienced that the drives are running even if they are jumpered wrong, you could see how tolerant the modern drives are, nevertheless they are jumpered wrong and may produce unpredictable errors (e.g. bus-hang);-)

Noster
heh heh, thanks, i'll see how it goes with cable select, i mean it doesn't really matter seeing i've only got this drive on the ide cable...right? :-)

anyway, i'll tell you what happens :-D
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Old 04-08-2004, 10:16 AM   #7
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Default Re: hard drive jumpers

Quote:
NightShade737 wrote:
On cable select, the middle connector is Master and the end one is Slave.
I believe the 80 pin cables corrected this problem, and the master is on far end. Also, as noted most 40 pin cables are not cable select ready. There is no twist in the cable, just a pin 28 is grounded on the master connector.
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Old 04-08-2004, 10:21 AM   #8
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Default Re: hard drive jumpers

Quote:
my opinion and experience is:

If you have a single drive at the cable, jumper it as Master
If you add a second drive to the cable, jumper it as Slave (there are some old drives where the Master-drive has to be jumpered explicitly as "Master with Slave present")
Jumper setting is not important if there is only one device in the cable. Both slave and master settings do work, just make sure you dont have 2 slaves or 2 masters in the cable.
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Old 04-08-2004, 10:22 AM   #9
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Default Re: hard drive jumpers

umm, ok, you scared me again, i'm changing it to master :-D
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Old 04-09-2004, 03:02 AM   #10
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Default Re: hard drive jumpers

worked on both cable select and when i put it on master

thanks guys :-D
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