Hi Marlene.
Do you leave your iMac on all the time ?

I turn mine off every night and restart each morning.
And on some occasions my Time Machine does not mount on Desktop.

However if I restart my iMac it will then mount.

> On 1 Feb 2019, at 11:54 pm, Philippe Chaperon <laut...@bigpond.com> wrote:
> 
> 
> 
> 
> 
> Hi Marlene, 
> 
> Until the experts confirm otherwise, can you try resetting your NVRAM or 
> PRAM. I have had the same problem on my 27” iMac on 2 occasions and did the 
> reset as advised by Daniel and the drives appeared back on the Desktop. 
> 
> Refer to:  https://support.apple.com/en-us/HT204063 
> <https://support.apple.com/en-us/HT204063>
> 
> Hope this solves your problem, but please let the group know one way or the 
> other as your solution could be different. 
> 
> Best regards and good luck, 
> 
> Philippe C. 
> 
> 
> On 1 Feb 2019, at 4:35 pm, Marlene Oostryck <oostr...@optusnet.com.au 
> <mailto:oostr...@optusnet.com.au>> wrote:
> 
> Hello All,
> 
> iMac 27”, Hi Sierra 10.13.6
> 
> 1. Back Up Time Machine - “My Book” - My Book Studio 11 - 4TB - permanently 
> connected
>     Message -  1.91TB of 4TB available
>                      Couldn’t complete the backup to “My Book”
>                        Last successful backup 10/1/19 (back-up 1/9/11 - 
> 10/1/19)
>                      
> 2. WD Backup Drive 2
>     Message -  1.34TB of 2Tb available
>                        Backups 10/10/18 - 1/11/18 - (planned for monthly 
> backup- away on holidays from 1/11/18 so this HD was disconnected then).
> 
> 
> No HD icons are showing on Desktop in Finder.
> All of the above were installed by Daniel Kerr - My Book installed 1/9/11 - 
> Drive 2 installed on 10/10/18
> The “My Book” HD unit is continually flashing. 
> 
> Have done a Google search re this problem but not sure how to proceed to get 
> Time Machine showing up on my desktop again and get it functioning as before.
> 
> Any suggestions would be appreciated.
> 
> Regards
> Marlene Oostryck
> 
> Mob: 0401 416 955
> oostr...@optusnet.com.au <mailto:oostr...@optusnet.com.au>
> 
> 
> 
> 
> 
> 
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Regards,
Stephen Chape






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