Hi Peter,

My reply in Situ below:

> On 21 Apr 2017, at 10:45 pm, Peter Crisp <[email protected]> wrote:
> 
> Hi Ronnie,I think I mentioned I work away. Since the below email, I've been 
> away for a swing and returned this Thursday. First thing I do is get my 
> MacBook to do a backup with nothing else running just to bring it up to date 
> in TM. I'd moved some video files in the time away so expected a sizeable 
> backup and after about 20 minutes Preparing Backup, it set off doing that 
> backup of around 20GB. Stacks of space on the backup drive (+900GB unused). 
> Next morning I checked and it had 'finished' but said latest backup was in 
> March 2016. I thought here we go again. Had to have some surgery (eye) today 
> but got around to look further this afternoon, subsequent backups couldn't 
> find the disc. All other MacBooks in the house are backing up nicely with no 
> hiccups tothe main TM 3TB disc - all since I moved to Sierra and had the 
> FileVault problem. That problem is resolved and not recurring fortunately.

> I unmounted the backup disc (it's a 2TB external drive connected via Hub to 
> the 3TB TC and is unique to my MacBook in the house). Then remounted and 
> restarted backup process by selecting the right disc again. A long 
> Preparation period ~1 hour then it set off backing up again - ~20GB again. 
> Upon that 'finishing' - Latest backup was November 2015! Then I get warnings 
> saying last backup was 500days ago - no kidding Time Machine!!

To save me having to explain how this can happen, and how it can be fixed, I’ve 
added a Quote below and then the link which will explain further for you Peter.
/Begin Quote:
"Overall, this happens because the system has a destination configured for Time 
Machine, but is not able to access it, and can happen for a fairly simple 
reason.

Time Machine supports multiple disks, and when you attach a newly formatted 
drive OS X may ask whether or not you wish to use the drive for your Mac. You 
can also manually specify additional Time Machine destinations in the system 
preferences, including both network storage and local storage. Either way, if 
you end up with multiple destinations configured, OS X will revolve through 
them when running its hourly backups to ensure even distribution of your 
backups.

This means that if you have a working Time Machine drive attached to your 
system, OS X may successfully back up to it, but then attempt to back up to the 
other destinations you have configured. At first OS X will simply skip them, 
but after 10 days you will begin to see the Time Machine warnings appear."
/End Quote:

How to manage “No backups for XX Days” warnings in OS X
<https://www.macissues.com/2016/04/20/how-to-manage-no-backup-for-xx-days-warnings-in-os-x/
 
<https://www.macissues.com/2016/04/20/how-to-manage-no-backup-for-xx-days-warnings-in-os-x/>>

Cheers,

Ronni

> 
> I have a CCC backup of the whole MacBook/external drive (800GB in all) - I am 
> thinking I'll blow away the Sparesebundle file and start again. It shouldn't 
> be this hard. Probably a simple fix but I have 1 backup to revert should I 
> have a MacBook HD failure so little risk for me. That will be a lengthy 
> process as the deletion will take most of a day and the Firsttime new backup 
> same again for full pass. This would be a bit of a 'Neanderthal' approach but 
> will work- I've done it before as you probably recall - in the past due to my 
> own error  - but I've learnt to have kid gloves with this TM thing. I wonder 
> if any other tips before I resort to the Primitive approach. 
> 
> I have 10.12.4 Sierra and a MacbookPro Retina.
> 
> Regards
> 
> 
> Pete
> 
> On 9 Apr 2017, at 5:58 AM, Peter Crisp <[email protected] 
> <mailto:[email protected]>> wrote:
> 
>> Hi Ronnie, thanks for that. I went through the process of turning off 
>> FileVault which took a while to decrypt the disc, then left to its own 
>> devices, this morning it has succesfully completed a backup with a time of 
>> 12:01 this morning. So it seems like it's sorted itself out. Thanks for the 
>> tips.
>> 
>> Regards
>> 
>> 
>> Pete
>> 
>> On 8 Apr 2017, at 3:03 PM, Ronni Brown <[email protected] 
>> <mailto:[email protected]>> wrote:
>> 
>>> 
>>>> On 8 Apr 2017, at 9:36 am, Peter Crisp <[email protected] 
>>>> <mailto:[email protected]>> wrote:
>>>> 
>>>> I did my updtae to Sierra 10.12.1 a couple of weeks ago and the MacBook 
>>>> (Pro Retina) and behavious of the MacBook was fine, nothing odd. I had TM 
>>>> turned OFF during the update and once the dust had settled, I turned it 
>>>> back on and after some time a ~5GB backup started and finished 
>>>> succesfully. 
>>>> 
>>>> Yesterday, I saw an Update showing in the App Store and so after a short 
>>>> review - I commenced the update which was to 10.12.4. 
>>>> 
>>>> Since then, my backups have been quite odd. I've notifications saying 
>>>> "can't locate the server", "you're trying to backup an encrypted disc to a 
>>>> non encrypted disc" and just now it was in the process of doing a backup - 
>>>> progress bar was showing for ~6GB backup - next time I came back to it it 
>>>> showed as though backup was all finished succesfully, however the panel 
>>>> indicated my last backup was June 2016!
>>>> 
>>>> I browsed a bit and noted also that autologin is disabled when FileVault 
>>>> is ON and I've normally had my MacBook set to autologin - and it has since 
>>>> moving to Sierra (12.4.1) reverted to reuquiring my login upon Start up - 
>>>> where prior configuration was Autologin was set ON.
>>>> 
>>>> Is this normal and any clues to maybe a simple setting I've not done which 
>>>> the update has changed for me? Is there a Sierra default configuration 
>>>> demanding FileVault ON and hence disabling Autologin and what is the 
>>>> connection with my backups behaviour if any?
>>> 
>>> Hi Peter,
>>> 
>>> That error message "you're trying to backup an encrypted disc to a non 
>>> encrypted disc" means that your 'Mac's hard drive is using FileVault 
>>> encryption to secure your data, but the hard drive you're using for Time 
>>> Machine is not encrypted.' 
>>> 
>>> Automatic login is disabled if your have FileVault enabled: 
>>> In System Preferences > Users & Groups > Login Options after enabling 
>>> FileVault, you’ll
>>> see that Automatic Login is set to Off and dimmed—you can’t enable it. 
>>> And, in System Preferences > Security & Privacy > General, the checkbox 
>>> labeled “Disable automatic login” disappears completely when you turn on 
>>> FileVault. This means you’ll always have to supply your password when you 
>>> turn on your Mac, restart, or log in.
>>> 
>>> You can read more about FileVault at the following links:
>>> 
>>> macOS Sierra: Encrypt the contents of your Mac with FileVault 
>>> <https://support.apple.com/kb/PH25553?viewlocale=en_US&locale=en_US>
>>> 
>>> macOS Sierra: Keep your Time Machine backup disk secure 
>>> <https://support.apple.com/kb/PH25615?viewlocale=en_QA&locale=en_QA>
>>> 
>>> 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
>>> 
>>> macOS Sierra 10.12.4
>>>> 
>>>> Regards
>>>> 
>>>> 
>>>> Pete
>>> 
>>> 

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