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Message from discussion causes of "drive not ready"
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billdeg  
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 More options Apr 9 2010, 12:44 am
From: billdeg <bill...@aol.com>
Date: Thu, 8 Apr 2010 21:44:18 -0700 (PDT)
Local: Fri, Apr 9 2010 12:44 am
Subject: causes of "drive not ready"
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Ok, let's try this one last time, I posted before with more detail,
but here are the basics:

I have a system one, and I can use either a 4FDC or a 16FDC, the
results are the same.

I have two Tandon 100-2a's, but work.

If I plug either of these drives into the system alone, both boot as
drive A just fine, format disks, RPM's 300, DS0 jumper only.

If I plug both drives into the system and set one of them as drive B,
I can still boot to A, but I get a "drive not ready" error when I try
to run a dir command using CDOS.  a: DIR B:  --> drive not ready.

I have swapped the Terminator around, I have tried a 2nd terminator,
no change.  The Tandon 100-2a and 4/16 FDC manuals state that the
terminator should be at the end.

I have swapped out the 64K RAM and ZPU cards, no change.

What could be causing the drive not ready?

NOTE That the 16FDC works just fine in another cromemco system using
8" drives, it can boot to B.

I am stumped.

Bill


 
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