I have access to a CD Writer, unfortunately this Quadra has no internal CD 
drive, regrettably I had an external CD drive and stupidly dispensed with 
it some time ago.

Mike thanks for that as its exactly what I'm looking for.

I have encountered a problem of ID conflict with the current internal hard 
drive. 

The person who sold the Quadra to me had installed a PC SCSI hard drive, 
the problem here is that these drives do not follow the Apple SCSI protocol.
Which uses 0 in the SCSI chain as the default ID for the internal hard 
drive. The PC drive fitted has the ID setting of 6.

This in itself shouldn't have caused a problem as I knew about it worked 
round it. Until I connected a device that had only 2 ID settings, 5 & 6.

I used its ID setting of 5 and hoped it would work, unfortunately its ID 
adjustor must be faulty, as I got an ID conflict, and the Quadra failed to 
boot.
I have hoped that after leaving the Quadra dormant for a while it may have 
rectified itself, especially with nothing else connected to it, but to no 
avail.

One point with the drives capacity, I'm scratching my bonce here but I seem 
to remember initially that it had an 8Mb internal drive with OS 8 
installed, which was barely sufficient to run the OS let alone any 
applications, and doing work with it was difficult.

The drive I've got an ID conflict with, I bought as a replacement and 
upgrade, its 250Mb. I have just checked online and the maximum capacity was 
400Mb.

So if you have any drive 200Mb or larger I'll certainly have OS 8. But if 
its smaller than that then it would have to be OS 7. 


On Friday, December 1, 2017 at 5:51:45 PM UTC, Barry Cross wrote:
>
> I am looking for an external SCSI hard drive for my Mac Quadra 700. 
> Around 500Mb preferably though I could use
> smaller. Hopefully with easy access ID selector. It'll have to work off UK 
> 220/240 mains voltage.
>
> Mac OS 7 or 8 system software also needed 
> installed on the drive preferred.
>

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