Thanks Ronni, I’ll do as you’ve suggested.

I’ve just tried to backup by using SuperDuper, and have received the following 
error message:

| 11:31:41 AM | Info |       Unable to open source file 
/Users/michael/Library/Mail/V2/pop-hawk...@mail.iinet.net.au 
<mailto:Users/michael/Library/Mail/V2/pop-hawk...@mail.iinet.net.au>/INBOX.mbox/903F6D09-E1B5-4CC2-92F6-0CD83639ACEC/Data/4/1/Messages/14557.emlx
 due to error: 13, Permission denied
| 11:31:41 AM | Info |       Error copying 
/Users/michael/Library/Mail/V2/pop-hawk...@mail.iinet.net.au 
<mailto:Users/michael/Library/Mail/V2/pop-hawk...@mail.iinet.net.au>/INBOX.mbox/903F6D09-E1B5-4CC2-92F6-0CD83639ACEC/Data/4/1/Messages/14557.emlx
 to /Volumes/My Passport for 
Mac/Users/michael/Library/Mail/V2/pop-hawk...@mail.iinet.net.au 
<mailto:Mac/Users/michael/Library/Mail/V2/pop-hawk...@mail.iinet.net.au>/INBOX.mbox/903F6D09-E1B5-4CC2-92F6-0CD83639ACEC/Data/4/1/Messages/14557.emlx
 of type 8 due to error 13
| 11:31:41 AM | Error | SDCopy: Error copying 
/Users/michael/Library/Mail/V2/pop-hawk...@mail.iinet.net.au 
<mailto:Users/michael/Library/Mail/V2/pop-hawk...@mail.iinet.net.au>/INBOX.mbox/903F6D09-E1B5-4CC2-92F6-0CD83639ACEC/Data/4/1/Messages/14557.emlx
 to /Volumes/My Passport for 
Mac/Users/michael/Library/Mail/V2/pop-hawk...@mail.iinet.net.au 
<mailto:Mac/Users/michael/Library/Mail/V2/pop-hawk...@mail.iinet.net.au>/INBOX.mbox/903F6D09-E1B5-4CC2-92F6-0CD83639ACEC/Data/4/1/Messages/14557.emlx
 of type 8 due to error 13: Permission denied


Looks like I may have to go to iinet to get something sorted out.

Cheers,

Michael.
> On 8 Jul 2016, at 10:16 am, Ronni Brown <ro...@mac.com 
> <mailto:ro...@mac.com>> wrote:
> 
> 
>> On 8 Jul 2016, at 8:41 AM, Michael Hawkins <michael.hawk...@mjhawkins.com.au 
>> <mailto:michael.hawk...@mjhawkins.com.au>> wrote:
>> 
>> One other thing has happened, and that is that the hard-drive icon does not 
>> show up on the desktop. It was there when I shut down the computer last 
>> night, but didn't appear when I started the computer up this morning. 
>> Repairing permissions and restarting did not reinstate the icon.
> 
> 
> On your Desktop - Click on Finder > Preferences in Menu Bar top left 
> Select  General - Show these items on the desktop 
> Select ✔ all Hard disks, External disks, CDs, DVDs, and iPods, Connected 
> servers
> 
> Also still in Finder Preferences - check Sidebar & Advanced that your 
> settings are as you want.
> 
> Deleting the Desktop Preference file to fix your other problem, can cause 
> some settings to change back to default.
> 
> Cheers,
> Ronni
> 
> 13-inch MacBook Air (April 2014)
> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz
> 8GB 1600MHz LPDDR3 SDRAM
> 512GB PCIe-based Flash Storage
> 
> El Capitan OS X 10.11.5
> 
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