Thanks Daniel,

I have followed your instructions and it now appears to be working.  the 
External drive/s are showing on the desktop and in Disk Utility.

The Time Machine backups ceased in February right after the system upgrade to 
Catalina and a misterious message appeared stating the system no longer 
supported firewire and to connect external drives via USB 3.  I left everything 
as was until recently and decided to re-connect Time Machine.

Will see how it goes now and advise on the results.

Regards


John Thompson
[email protected]



> On 15 Jun 2020, at 8:14 am, Daniel Kerr <[email protected]> wrote:
> 
> Hi John
> 
> 
> As far as I’m aware Catalina does still work with Firewire. The only thing 
> they “disabled” is that you can’t boot from a Firewire device anymore.
> But you can still access Firewire drives if you have a Firewire (or similar) 
> port.
> One thing I would try first is to unplug all the cables and connectors from 
> the Firewire drive and the iMac. Leave everything unplug for a few minutes. 
> Then restart the computer.
> After restart, plug the cables back in and then see if the drive mounts again.
> 
> You could also check in Disk Utility to see if it sees the drive at all. If 
> it’s greyed out, it may just need clicked on to “Mount”.
> If no success with that, you could try an SMC reset on the Mac mini. Then see 
> if the drives show up again.
> 
> Also, did you have any other computers you can check it on as well and see if 
> it loads at all? That will show if it’s the computer or the drive is the 
> issue.
> 
> Hope something there helps.
> Kind regards
> Daniel
> 
>  Sent from my iPhone XS 
> 
> ---
> Daniel Kerr
> MacWizardry
> 
> Phone: 0414 795 960
> Email: <daniel AT macwizardry.com.au>
> Web:   <http://www.macwizardry.com.au>
> 
> 
> **For everything Apple**
> 
> NOTE: Any information provided in this email may be my personal opinion and 
> as such should be taken accordingly, and may not be the views of MacWizardry. 
> Any information provided does not offer or warrant any form of warranty or 
> accept liability. It would be appreciated that if any information in this 
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> author be requested. 
> 
>> On 14 Jun 2020, at 9:41 am, John Thompson <[email protected]> wrote:
>> 
>> Maybe Peter H. or Daniel Kerr could assist in this one.
>> 
>> For quite a number of years I have been using a Voyager Q External drive, 
>> purchased from Daniel, for my Backup and Time Machine, connected to my Mac 
>> Mini (Late 2014) via Thunderbolt to firewire cable.  This has worked fine 
>> until my upgrade to Catalina which no longer supports Firewire and now 
>> requires USB 3 connectivity.
>> 
>> Could you please advise the cableing I would require and the port/s 
>> available on the Mac Mini for same.
>> 
>> Kind Regartds
>> 
>> 
>> John Thompson
>> [email protected]
>> 
>> 
>> 
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