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SuperRey

Correct jumper settings for SCSI HDD on an Apple LC 475

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Hello,

 

I have been struggling with the jumper configuration for a 50-pin SCSI HDD.

 

The model is IBM DSAS-3540.

 

Of course, id, was set to 0, and internal terminator was enabled but it was not detected.

 

I have 3 more settings I can change with the jumpers:

  • Disable auto spin up
  • Disable unit attention
  • Disable TI negotiation

I started disabling the TI negotiation, and now it seems to work.

 

The question is, should I disable the other two?

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