Getting my IRIS working

Introduction

When I got my IRIS, it was already clear to me, that the harddisc was broken. Unfortunately the harddiscs used in many IRISes are not standard SCSI or old MFM/RLL discs - no, they are ESDI discs. As fas as I remember, ESDI was state of the art a long time ago andused in servers and workstations. But after some years SCSI won the market and ESDI died out. So it is rather difficult to find some ESDI drives nowadays.

Even worse, you cannot use all ESDI disks in the IRIS, you can only use the following models:

ID	Model	Interface	Size
96202	AST 96202	?	?
96203	AST 96203	?	?
3046	Atasi 3046	ST-506	39meg
WREN	CDC Wren II(86)	ST-506	72meg
94156	CDC	ESDI	40-72meg
WREN3	CDC Wren III	ESDI	86-155meg
D570	Cynthia D570	?	?
2243	Fujitsu 2243	ST-506	67meg
2246	Fujitsu 2246	ESDI	172meg
2249	Fujitsu 2249	ESDI	389meg
5118	Hitachi DK511-8	ST-506	67meg
5128	Hitachi DK512-8	ESDI	67meg
51212	Hitachi DK512-12	ESDI	94meg
51217	Hitachi DK512-17	ESDI	134meg
51438	Hitachi DK514-38	ESDI	330meg
1085	Maxtor 1085	ST-506	71meg
1140	Maxtor 1140	ST-506	119meg
4175	Maxtor 4175	ESDI	150meg
M514	Memorex 514	ST-506	58meg
3212	Miniscribe 3212	ST-506	11meg
QUME	Qume 592?	?	?
1300	Siemens 1300	ESDI	261meg
T101	Tandon TM-101-4	?	?
TM252	Tandon TM-252	ST-506	10meg
MK56FB	Toshiba MK56FB	ST-506	130meg
156FA	Toshiba MK156FA	ESDI	148meg
V130	Vertex/Priam/Bull V-130	ST-506	26meg
V170	Vertex/Priam/Bull V-170	ST-506	60meg
V185	Vertex/Priam/Bull V-185	ST-506	71meg
155015	1550-15?	?	?

Source: The IRIS FAQ

Of course I also can use ESDI drives, although there are some ST-506 drives listed above. These require a different controller.

• The IRIS FAQ