[comp.sys.mac.hardware] Weird external drive problem

haynes@unssun.nevada.edu (Kenneth Haynes) (05/05/91)

Howdy-

    I work in a small mac lab here on campus and brought in an external
3.5 drive a bought about a year ago.  The drive (never before used) will
work only on 2 out of 10 SEs and won't work at all on our SE/30s or IIcx.
On the Machines it doesn't work with, it will not recognize a formated 
disk or can it format a disk.  It works like a charm on the two SEs.
    DOES ANYONE HAVE ANY IDEA WHY THIS IS HAPPING????????
    We can't come up with anything in the Lab and I am ready to throw this
drive out the window since the warranty is now null. (please no flames
about why I never tested the drive before now)
	
    I would appreciate any info.

------ken

"What do you mean we ran out of gas?"              ______-==-______
                                       ____-------=----------------=-------____
                 ________________  _ _-    --------________________--------
                (______________(_||_) _______ /
                   /_____/_____            _-
  Capt Ken Haynes              \__________-
  CO, USS L'Hopital
  Taylor Series Class Starship
  NCC-x^ln(1701)                United Federation of Calculus Haters
  haynes@unssun.unr.edu or haynes@tahoe.unr.edu
 

afry@uhura.cc.rochester.edu (Alan R. Fry) (05/05/91)

In article <6209@tahoe.unr.edu> haynes@unssun.UUCP (Kenneth Haynes) writes:
|
|Howdy-
|
|    I work in a small mac lab here on campus and brought in an external
|3.5 drive a bought about a year ago.  The drive (never before used) will
|work only on 2 out of 10 SEs and won't work at all on our SE/30s or IIcx.
|On the Machines it doesn't work with, it will not recognize a formated 
|disk or can it format a disk.  It works like a charm on the two SEs.
|    DOES ANYONE HAVE ANY IDEA WHY THIS IS HAPPING????????
|    We can't come up with anything in the Lab and I am ready to throw this
|drive out the window since the warranty is now null. (please no flames
|about why I never tested the drive before now)
|	
|    I would appreciate any info.
|

My guess is that only those two SE's have the correct drive software for
that particular drive.  Drive software is usually in the form of an init, an
it is often necessary to mount a drive because of the way in which the drive
was formatted.  Check the original disks that came with the drive and see if
they contain an init which you should install in the system folder of each
machine on which you wish to use the drive.

Another problem could have to do with the termination of the drive.
Depending on what other scsi devices are connected to each of the other
machines, you could run into problems with having the external drive (not)
terminated.

Good luck,

Alan 

-- 
	+--------------------------------------------------------------+
	|  Alan R Fry                     |   You know what I hate?    |
	|  afry@uhura.cc.rochester.edu    |   Rhetorical questions     |
	+--------------------------------------------------------------+