Don't interrupt the backup Peter, let it run overnight if necessary. Let it 
complete the backup.
And your question re: plugging the sparsebundle drive directly to your Mac.
NO It won't work.. TM treats a local target differently to a network target.

Sent from Ronni's iPad4


> On 22 Apr 2017, at 6:45 pm, Peter Crisp <[email protected]> wrote:
> 
> Thanks Ronnie, it has been just about all afternoon trying Preparing Backup. 
> A short while back it reached the point of actually starting a Backup again 
> (20GB again), but promisingly, the last time it completed a backup earlier 
> this morning it said Last Backup April 9 2017, so that is quite near time 
> wise. I am being patient in giving it some freedom before the axe falls. 
> 
> If this time around doesn't get itself sorted, I might just resort to some 
> clobbering.
> 
> One question I have is, if I were to unmounted the backup drive I am using 
> from the TC and plug into a local USB on the MacBook Pro, will the TM 
> software recognise the same Sparesebundle file being local (once I browse to 
> it in the Select Disc process) and not wireless as it is currently? That 
> might accelerate the whole process for me by being local. I am prepared to 
> give this a go before resorting to a brutal clearing of the disc and new 
> backup again.
> 
> Regards
> 
> 
> Pete
> 
>> On 22 Apr 2017, at 2:31 PM, Ronni Brown <[email protected]> wrote:
>> 
>> 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/>
>> 
>> 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]> 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]> wrote:
>>>>> 
>>>>> 
>>>>>> On 8 Apr 2017, at 9:36 am, Peter Crisp <[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
>>>>> 
>>>>> macOS Sierra: Keep your Time Machine backup disk secure
>>>>> 
>>>>> 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
>>>>> 
>>>>> 
>> 
>> -- The WA Macintosh User Group Mailing List --
>> Archives - <http://www.wamug.org.au/mailinglist/archives.shtml>
>> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml>
>> Settings & Unsubscribe - 
>> <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>
> -- The WA Macintosh User Group Mailing List --
> Archives - <http://www.wamug.org.au/mailinglist/archives.shtml>
> Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml>
> Settings & Unsubscribe - 
> <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>
-- The WA Macintosh User Group Mailing List --
Archives - <http://www.wamug.org.au/mailinglist/archives.shtml>
Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.shtml>
Settings & Unsubscribe - <http://lists.wamug.org.au/listinfo/wamug.org.au-wamug>